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