English verb conjugation
CAN PINPOINT

Regular verb: pinpoint - pinpointed - pinpointed

Affirmation

Simple form	V-ing form
I can pinpoint you can pinpoint he can pinpoint we can pinpoint you can pinpoint they can pinpoint	I can be pinpointing you can be pinpointing he can be pinpointing we can be pinpointing you can be pinpointing they can be pinpointing
Perfect	V-ing perfect
I can have pinpointed you can have pinpointed he can have pinpointed we can have pinpointed you can have pinpointed they can have pinpointed	I can have been pinpointing you can have been pinpointing he can have been pinpointing we can have been pinpointing you can have been pinpointing they can have been pinpointing

Negation

Simple form	V-ing form
I cannot pinpoint you cannot pinpoint he cannot pinpoint we cannot pinpoint you cannot pinpoint they cannot pinpoint	I cannot be pinpointing you cannot be pinpointing he cannot be pinpointing we cannot be pinpointing you cannot be pinpointing they cannot be pinpointing
Perfect	V-ing perfect
I cannot have pinpointed you cannot have pinpointed he cannot have pinpointed we cannot have pinpointed you cannot have pinpointed they cannot have pinpointed	I cannot have been pinpointing you cannot have been pinpointing he cannot have been pinpointing we cannot have been pinpointing you cannot have been pinpointing they cannot have been pinpointing

Interrogative form

Simple form	V-ing form
can I pinpoint? can you pinpoint? can he pinpoint? can we pinpoint? can you pinpoint? can they pinpoint?	can I be pinpointing? can you be pinpointing? can he be pinpointing? can we be pinpointing? can you be pinpointing? can they be pinpointing?
Perfect	V-ing perfect
can I have pinpointed? can you have pinpointed? can he have pinpointed? can we have pinpointed? can you have pinpointed? can they have pinpointed?	can I have been pinpointing? can you have been pinpointing? can he have been pinpointing? can we have been pinpointing? can you have been pinpointing? can they have been pinpointing?

Interro-negative form

Simple form	V-ing form
can I not pinpoint? can you not pinpoint? can he not pinpoint? can we not pinpoint? can you not pinpoint? can they not pinpoint?	can I not be pinpointing? can you not be pinpointing? can he not be pinpointing? can we not be pinpointing? can you not be pinpointing? can they not be pinpointing?
Perfect	V-ing perfect
can I not have pinpointed? can you not have pinpointed? can he not have pinpointed? can we not have pinpointed? can you not have pinpointed? can they not have pinpointed?	can I not have been pinpointing? can you not have been pinpointing? can he not have been pinpointing? can we not have been pinpointing? can you not have been pinpointing? can they not have been pinpointing?