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