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