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