could ting
Regular verb: ting - tinged- tinged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could ting
you could ting
he could ting
we could ting
you could ting
they could ting 	I could be tinging
you could be tinging
he could be tinging
we could be tinging
you could be tinging
they could be tinging	I could have tinged
you could have tinged
he could have tinged
we could have tinged
you could have tinged
they could have tinged	I could have been tinging
you could have been tinging
he could have been tinging
we could have been tinging
you could have been tinging
they could have been tinging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not ting
you could not ting
he could not ting
we could not ting
you could not ting
they could not ting 	I could not be tinging
you could not be tinging
he could not be tinging
we could not be tinging
you could not be tinging
they could not be tinging	I could not have tinged
you could not have tinged
he could not have tinged
we could not have tinged
you could not have tinged
they could not have tinged	I could not have been tinging
you could not have been tinging
he could not have been tinging
we could not have been tinging
you could not have been tinging
they could not have been tinging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I ting?
could you ting?
could he ting?
could we ting?
could you ting?
could they ting? 	could I be tinging?
could you be tinging?
could he be tinging?
could we be tinging?
could you be tinging?
could they be tinging? 	could I have tinged?
could you have tinged?
could he have tinged?
could we have tinged?
could you have tinged?
could they have tinged? 	could I have been tinging?
could you have been tinging?
could he have been tinging?
could we have been tinging?
could you have been tinging?
could they have been tinging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not ting?
could you not ting?
could he not ting?
could we not ting?
could you not ting?
could they not ting? 	could I not be tinging?
could you not be tinging?
could he not be tinging?
could we not be tinging?
could you not be tinging?
could they not be tinging? 	could I not have tinged?
could you not have tinged?
could he not have tinged?
could we not have tinged?
could you not have tinged?
could they not have tinged? 	could I not have been tinging?
could you not have been tinging?
could he not have been tinging?
could we not have been tinging?
could you not have been tinging?
could they not have been tinging?