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