I could resystematise you could resystematise he could resystematise we could resystematise you could resystematise they could resystematise
V-ing form
I could be resystematising you could be resystematising he could be resystematising we could be resystematising you could be resystematising they could be resystematising
Perfect
I could have resystematised you could have resystematised he could have resystematised we could have resystematised you could have resystematised they could have resystematised
V-ing perfect
I could have been resystematising you could have been resystematising he could have been resystematising we could have been resystematising you could have been resystematising they could have been resystematising
Negation
Simple form
I couldn't resystematise you couldn't resystematise he couldn't resystematise we couldn't resystematise you couldn't resystematise they couldn't resystematise
V-ing form
I couldn't be resystematising you couldn't be resystematising he couldn't be resystematising we couldn't be resystematising you couldn't be resystematising they couldn't be resystematising
Perfect
I couldn't have resystematised you couldn't have resystematised he couldn't have resystematised we couldn't have resystematised you couldn't have resystematised they couldn't have resystematised
V-ing perfect
I couldn't have been resystematising you couldn't have been resystematising he couldn't have been resystematising we couldn't have been resystematising you couldn't have been resystematising they couldn't have been resystematising
Interrogative form
Simple form
could I resystematise? could you resystematise? could he resystematise? could we resystematise? could you resystematise? could they resystematise?
V-ing form
could I be resystematising? could you be resystematising? could he be resystematising? could we be resystematising? could you be resystematising? could they be resystematising?
Perfect
could I have resystematised? could you have resystematised? could he have resystematised? could we have resystematised? could you have resystematised? could they have resystematised?
V-ing perfect
could I have been resystematising? could you have been resystematising? could he have been resystematising? could we have been resystematising? could you have been resystematising? could they have been resystematising?
Interro-negative form
Simple form
couldn't I resystematise? couldn't you resystematise? couldn't he resystematise? couldn't we resystematise? couldn't you resystematise? couldn't they resystematise?
V-ing form
couldn't I be resystematising? couldn't you be resystematising? couldn't he be resystematising? couldn't we be resystematising? couldn't you be resystematising? couldn't they be resystematising?
Perfect
couldn't I have resystematised? couldn't you have resystematised? couldn't he have resystematised? couldn't we have resystematised? couldn't you have resystematised? couldn't they have resystematised?
V-ing perfect
couldn't I have been resystematising? couldn't you have been resystematising? couldn't he have been resystematising? couldn't we have been resystematising? couldn't you have been resystematising? couldn't they have been resystematising?