I could disassemble you could disassemble she could disassemble we could disassemble you could disassemble they could disassemble
V-ing form
I could be disassembling you could be disassembling she could be disassembling we could be disassembling you could be disassembling they could be disassembling
Perfect
I could have disassembled you could have disassembled she could have disassembled we could have disassembled you could have disassembled they could have disassembled
V-ing perfect
I could have been disassembling you could have been disassembling she could have been disassembling we could have been disassembling you could have been disassembling they could have been disassembling
Negation
Simple form
I couldn't disassemble you couldn't disassemble she couldn't disassemble we couldn't disassemble you couldn't disassemble they couldn't disassemble
V-ing form
I couldn't be disassembling you couldn't be disassembling she couldn't be disassembling we couldn't be disassembling you couldn't be disassembling they couldn't be disassembling
Perfect
I couldn't have disassembled you couldn't have disassembled she couldn't have disassembled we couldn't have disassembled you couldn't have disassembled they couldn't have disassembled
V-ing perfect
I couldn't have been disassembling you couldn't have been disassembling she couldn't have been disassembling we couldn't have been disassembling you couldn't have been disassembling they couldn't have been disassembling
Interrogative form
Simple form
could I disassemble? could you disassemble? could she disassemble? could we disassemble? could you disassemble? could they disassemble?
V-ing form
could I be disassembling? could you be disassembling? could she be disassembling? could we be disassembling? could you be disassembling? could they be disassembling?
Perfect
could I have disassembled? could you have disassembled? could she have disassembled? could we have disassembled? could you have disassembled? could they have disassembled?
V-ing perfect
could I have been disassembling? could you have been disassembling? could she have been disassembling? could we have been disassembling? could you have been disassembling? could they have been disassembling?
Interro-negative form
Simple form
couldn't I disassemble? couldn't you disassemble? couldn't she disassemble? couldn't we disassemble? couldn't you disassemble? couldn't they disassemble?
V-ing form
couldn't I be disassembling? couldn't you be disassembling? couldn't she be disassembling? couldn't we be disassembling? couldn't you be disassembling? couldn't they be disassembling?
Perfect
couldn't I have disassembled? couldn't you have disassembled? couldn't she have disassembled? couldn't we have disassembled? couldn't you have disassembled? couldn't they have disassembled?
V-ing perfect
couldn't I have been disassembling? couldn't you have been disassembling? couldn't she have been disassembling? couldn't we have been disassembling? couldn't you have been disassembling? couldn't they have been disassembling?