may preassemble
Regular verb: preassemble - preassembled- preassembled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may preassemble
you may preassemble
he may preassemble
we may preassemble
you may preassemble
they may preassemble 	I may be preassembling
you may be preassembling
he may be preassembling
we may be preassembling
you may be preassembling
they may be preassembling	I may have preassembled
you may have preassembled
he may have preassembled
we may have preassembled
you may have preassembled
they may have preassembled	I may have been preassembling
you may have been preassembling
he may have been preassembling
we may have been preassembling
you may have been preassembling
they may have been preassembling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't preassemble
you mayn't preassemble
he mayn't preassemble
we mayn't preassemble
you mayn't preassemble
they mayn't preassemble 	I mayn't be preassembling
you mayn't be preassembling
he mayn't be preassembling
we mayn't be preassembling
you mayn't be preassembling
they mayn't be preassembling	I mayn't have preassembled
you mayn't have preassembled
he mayn't have preassembled
we mayn't have preassembled
you mayn't have preassembled
they mayn't have preassembled	I mayn't have been preassembling
you mayn't have been preassembling
he mayn't have been preassembling
we mayn't have been preassembling
you mayn't have been preassembling
they mayn't have been preassembling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I preassemble?
may you preassemble?
may he preassemble?
may we preassemble?
may you preassemble?
may they preassemble? 	may I be preassembling?
may you be preassembling?
may he be preassembling?
may we be preassembling?
may you be preassembling?
may they be preassembling? 	may I have preassembled?
may you have preassembled?
may he have preassembled?
may we have preassembled?
may you have preassembled?
may they have preassembled? 	may I have been preassembling?
may you have been preassembling?
may he have been preassembling?
may we have been preassembling?
may you have been preassembling?
may they have been preassembling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I preassemble?
mayn't you preassemble?
mayn't he preassemble?
mayn't we preassemble?
mayn't you preassemble?
mayn't they preassemble? 	mayn't I be preassembling?
mayn't you be preassembling?
mayn't he be preassembling?
mayn't we be preassembling?
mayn't you be preassembling?
mayn't they be preassembling? 	mayn't I have preassembled?
mayn't you have preassembled?
mayn't he have preassembled?
mayn't we have preassembled?
mayn't you have preassembled?
mayn't they have preassembled? 	mayn't I have been preassembling?
mayn't you have been preassembling?
mayn't he have been preassembling?
mayn't we have been preassembling?
mayn't you have been preassembling?
mayn't they have been preassembling?