could sleigh
Regular verb: sleigh - sleighed- sleighed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could sleigh
you could sleigh
he could sleigh
we could sleigh
you could sleigh
they could sleigh 	I could be sleighing
you could be sleighing
he could be sleighing
we could be sleighing
you could be sleighing
they could be sleighing	I could have sleighed
you could have sleighed
he could have sleighed
we could have sleighed
you could have sleighed
they could have sleighed	I could have been sleighing
you could have been sleighing
he could have been sleighing
we could have been sleighing
you could have been sleighing
they could have been sleighing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't sleigh
you couldn't sleigh
he couldn't sleigh
we couldn't sleigh
you couldn't sleigh
they couldn't sleigh 	I couldn't be sleighing
you couldn't be sleighing
he couldn't be sleighing
we couldn't be sleighing
you couldn't be sleighing
they couldn't be sleighing	I couldn't have sleighed
you couldn't have sleighed
he couldn't have sleighed
we couldn't have sleighed
you couldn't have sleighed
they couldn't have sleighed	I couldn't have been sleighing
you couldn't have been sleighing
he couldn't have been sleighing
we couldn't have been sleighing
you couldn't have been sleighing
they couldn't have been sleighing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I sleigh?
could you sleigh?
could he sleigh?
could we sleigh?
could you sleigh?
could they sleigh? 	could I be sleighing?
could you be sleighing?
could he be sleighing?
could we be sleighing?
could you be sleighing?
could they be sleighing? 	could I have sleighed?
could you have sleighed?
could he have sleighed?
could we have sleighed?
could you have sleighed?
could they have sleighed? 	could I have been sleighing?
could you have been sleighing?
could he have been sleighing?
could we have been sleighing?
could you have been sleighing?
could they have been sleighing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I sleigh?
couldn't you sleigh?
couldn't he sleigh?
couldn't we sleigh?
couldn't you sleigh?
couldn't they sleigh? 	couldn't I be sleighing?
couldn't you be sleighing?
couldn't he be sleighing?
couldn't we be sleighing?
couldn't you be sleighing?
couldn't they be sleighing? 	couldn't I have sleighed?
couldn't you have sleighed?
couldn't he have sleighed?
couldn't we have sleighed?
couldn't you have sleighed?
couldn't they have sleighed? 	couldn't I have been sleighing?
couldn't you have been sleighing?
couldn't he have been sleighing?
couldn't we have been sleighing?
couldn't you have been sleighing?
couldn't they have been sleighing?