I could deviate you could deviate he could deviate we could deviate you could deviate they could deviate
V-ing form
I could be deviating you could be deviating he could be deviating we could be deviating you could be deviating they could be deviating
Perfect
I could have deviated you could have deviated he could have deviated we could have deviated you could have deviated they could have deviated
V-ing perfect
I could have been deviating you could have been deviating he could have been deviating we could have been deviating you could have been deviating they could have been deviating
Negation
Simple form
I could not deviate you could not deviate he could not deviate we could not deviate you could not deviate they could not deviate
V-ing form
I could not be deviating you could not be deviating he could not be deviating we could not be deviating you could not be deviating they could not be deviating
Perfect
I could not have deviated you could not have deviated he could not have deviated we could not have deviated you could not have deviated they could not have deviated
V-ing perfect
I could not have been deviating you could not have been deviating he could not have been deviating we could not have been deviating you could not have been deviating they could not have been deviating
Interrogative form
Simple form
could I deviate? could you deviate? could he deviate? could we deviate? could you deviate? could they deviate?
V-ing form
could I be deviating? could you be deviating? could he be deviating? could we be deviating? could you be deviating? could they be deviating?
Perfect
could I have deviated? could you have deviated? could he have deviated? could we have deviated? could you have deviated? could they have deviated?
V-ing perfect
could I have been deviating? could you have been deviating? could he have been deviating? could we have been deviating? could you have been deviating? could they have been deviating?
Interro-negative form
Simple form
could I not deviate? could you not deviate? could he not deviate? could we not deviate? could you not deviate? could they not deviate?
V-ing form
could I not be deviating? could you not be deviating? could he not be deviating? could we not be deviating? could you not be deviating? could they not be deviating?
Perfect
could I not have deviated? could you not have deviated? could he not have deviated? could we not have deviated? could you not have deviated? could they not have deviated?
V-ing perfect
could I not have been deviating? could you not have been deviating? could he not have been deviating? could we not have been deviating? could you not have been deviating? could they not have been deviating?