I can preassemble you can preassemble she can preassemble we can preassemble you can preassemble they can preassemble
V-ing form
I can be preassembling you can be preassembling she can be preassembling we can be preassembling you can be preassembling they can be preassembling
Perfect
I can have preassembled you can have preassembled she can have preassembled we can have preassembled you can have preassembled they can have preassembled
V-ing perfect
I can have been preassembling you can have been preassembling she can have been preassembling we can have been preassembling you can have been preassembling they can have been preassembling
Negation
Simple form
I cannot preassemble you cannot preassemble she cannot preassemble we cannot preassemble you cannot preassemble they cannot preassemble
V-ing form
I cannot be preassembling you cannot be preassembling she cannot be preassembling we cannot be preassembling you cannot be preassembling they cannot be preassembling
Perfect
I cannot have preassembled you cannot have preassembled she cannot have preassembled we cannot have preassembled you cannot have preassembled they cannot have preassembled
V-ing perfect
I cannot have been preassembling you cannot have been preassembling she cannot have been preassembling we cannot have been preassembling you cannot have been preassembling they cannot have been preassembling
Interrogative form
Simple form
can I preassemble? can you preassemble? can she preassemble? can we preassemble? can you preassemble? can they preassemble?
V-ing form
can I be preassembling? can you be preassembling? can she be preassembling? can we be preassembling? can you be preassembling? can they be preassembling?
Perfect
can I have preassembled? can you have preassembled? can she have preassembled? can we have preassembled? can you have preassembled? can they have preassembled?
V-ing perfect
can I have been preassembling? can you have been preassembling? can she have been preassembling? can we have been preassembling? can you have been preassembling? can they have been preassembling?
Interro-negative form
Simple form
can I not preassemble? can you not preassemble? can she not preassemble? can we not preassemble? can you not preassemble? can they not preassemble?
V-ing form
can I not be preassembling? can you not be preassembling? can she not be preassembling? can we not be preassembling? can you not be preassembling? can they not be preassembling?
Perfect
can I not have preassembled? can you not have preassembled? can she not have preassembled? can we not have preassembled? can you not have preassembled? can they not have preassembled?
V-ing perfect
can I not have been preassembling? can you not have been preassembling? can she not have been preassembling? can we not have been preassembling? can you not have been preassembling? can they not have been preassembling?