English verb conjugation
CAN SHAM

Regular verb: sham - shammed - shammed

Affirmation

Simple form	V-ing form
I can sham you can sham he can sham we can sham you can sham they can sham	I can be shamming you can be shamming he can be shamming we can be shamming you can be shamming they can be shamming
Perfect	V-ing perfect
I can have shammed you can have shammed he can have shammed we can have shammed you can have shammed they can have shammed	I can have been shamming you can have been shamming he can have been shamming we can have been shamming you can have been shamming they can have been shamming

Negation

Simple form	V-ing form
I cannot sham you cannot sham he cannot sham we cannot sham you cannot sham they cannot sham	I cannot be shamming you cannot be shamming he cannot be shamming we cannot be shamming you cannot be shamming they cannot be shamming
Perfect	V-ing perfect
I cannot have shammed you cannot have shammed he cannot have shammed we cannot have shammed you cannot have shammed they cannot have shammed	I cannot have been shamming you cannot have been shamming he cannot have been shamming we cannot have been shamming you cannot have been shamming they cannot have been shamming

Interrogative form

Simple form	V-ing form
can I sham? can you sham? can he sham? can we sham? can you sham? can they sham?	can I be shamming? can you be shamming? can he be shamming? can we be shamming? can you be shamming? can they be shamming?
Perfect	V-ing perfect
can I have shammed? can you have shammed? can he have shammed? can we have shammed? can you have shammed? can they have shammed?	can I have been shamming? can you have been shamming? can he have been shamming? can we have been shamming? can you have been shamming? can they have been shamming?

Interro-negative form

Simple form	V-ing form
can I not sham? can you not sham? can he not sham? can we not sham? can you not sham? can they not sham?	can I not be shamming? can you not be shamming? can he not be shamming? can we not be shamming? can you not be shamming? can they not be shamming?
Perfect	V-ing perfect
can I not have shammed? can you not have shammed? can he not have shammed? can we not have shammed? can you not have shammed? can they not have shammed?	can I not have been shamming? can you not have been shamming? can he not have been shamming? can we not have been shamming? can you not have been shamming? can they not have been shamming?