Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could dilapidate dump you could dilapidate dump he could dilapidate dump we could dilapidate dump you could dilapidate dump they could dilapidate dump
V-ing form
I could be dilapidate dumping you could be dilapidate dumping he could be dilapidate dumping we could be dilapidate dumping you could be dilapidate dumping they could be dilapidate dumping
Perfect
I could have dilapidate dumped you could have dilapidate dumped he could have dilapidate dumped we could have dilapidate dumped you could have dilapidate dumped they could have dilapidate dumped
V-ing perfect
I could have been dilapidate dumping you could have been dilapidate dumping he could have been dilapidate dumping we could have been dilapidate dumping you could have been dilapidate dumping they could have been dilapidate dumping
Negation
Simple form
I couldn't dilapidate dump you couldn't dilapidate dump he couldn't dilapidate dump we couldn't dilapidate dump you couldn't dilapidate dump they couldn't dilapidate dump
V-ing form
I couldn't be dilapidate dumping you couldn't be dilapidate dumping he couldn't be dilapidate dumping we couldn't be dilapidate dumping you couldn't be dilapidate dumping they couldn't be dilapidate dumping
Perfect
I couldn't have dilapidate dumped you couldn't have dilapidate dumped he couldn't have dilapidate dumped we couldn't have dilapidate dumped you couldn't have dilapidate dumped they couldn't have dilapidate dumped
V-ing perfect
I couldn't have been dilapidate dumping you couldn't have been dilapidate dumping he couldn't have been dilapidate dumping we couldn't have been dilapidate dumping you couldn't have been dilapidate dumping they couldn't have been dilapidate dumping
Interrogative form
Simple form
could I dilapidate dump? could you dilapidate dump? could he dilapidate dump? could we dilapidate dump? could you dilapidate dump? could they dilapidate dump?
V-ing form
could I be dilapidate dumping? could you be dilapidate dumping? could he be dilapidate dumping? could we be dilapidate dumping? could you be dilapidate dumping? could they be dilapidate dumping?
Perfect
could I have dilapidate dumped? could you have dilapidate dumped? could he have dilapidate dumped? could we have dilapidate dumped? could you have dilapidate dumped? could they have dilapidate dumped?
V-ing perfect
could I have been dilapidate dumping? could you have been dilapidate dumping? could he have been dilapidate dumping? could we have been dilapidate dumping? could you have been dilapidate dumping? could they have been dilapidate dumping?
Interro-negative form
Simple form
couldn't I dilapidate dump? couldn't you dilapidate dump? couldn't he dilapidate dump? couldn't we dilapidate dump? couldn't you dilapidate dump? couldn't they dilapidate dump?
V-ing form
couldn't I be dilapidate dumping? couldn't you be dilapidate dumping? couldn't he be dilapidate dumping? couldn't we be dilapidate dumping? couldn't you be dilapidate dumping? couldn't they be dilapidate dumping?
Perfect
couldn't I have dilapidate dumped? couldn't you have dilapidate dumped? couldn't he have dilapidate dumped? couldn't we have dilapidate dumped? couldn't you have dilapidate dumped? couldn't they have dilapidate dumped?
V-ing perfect
couldn't I have been dilapidate dumping? couldn't you have been dilapidate dumping? couldn't he have been dilapidate dumping? couldn't we have been dilapidate dumping? couldn't you have been dilapidate dumping? couldn't they have been dilapidate dumping?