could pike
Regular verb: pike - piked- piked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could pike
you could pike
he could pike
we could pike
you could pike
they could pike 	I could be piking
you could be piking
he could be piking
we could be piking
you could be piking
they could be piking	I could have piked
you could have piked
he could have piked
we could have piked
you could have piked
they could have piked	I could have been piking
you could have been piking
he could have been piking
we could have been piking
you could have been piking
they could have been piking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not pike
you could not pike
he could not pike
we could not pike
you could not pike
they could not pike 	I could not be piking
you could not be piking
he could not be piking
we could not be piking
you could not be piking
they could not be piking	I could not have piked
you could not have piked
he could not have piked
we could not have piked
you could not have piked
they could not have piked	I could not have been piking
you could not have been piking
he could not have been piking
we could not have been piking
you could not have been piking
they could not have been piking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I pike?
could you pike?
could he pike?
could we pike?
could you pike?
could they pike? 	could I be piking?
could you be piking?
could he be piking?
could we be piking?
could you be piking?
could they be piking? 	could I have piked?
could you have piked?
could he have piked?
could we have piked?
could you have piked?
could they have piked? 	could I have been piking?
could you have been piking?
could he have been piking?
could we have been piking?
could you have been piking?
could they have been piking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not pike?
could you not pike?
could he not pike?
could we not pike?
could you not pike?
could they not pike? 	could I not be piking?
could you not be piking?
could he not be piking?
could we not be piking?
could you not be piking?
could they not be piking? 	could I not have piked?
could you not have piked?
could he not have piked?
could we not have piked?
could you not have piked?
could they not have piked? 	could I not have been piking?
could you not have been piking?
could he not have been piking?
could we not have been piking?
could you not have been piking?
could they not have been piking?