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 can't sham you can't sham he can't sham we can't sham you can't sham they can't sham	I can't be shamming you can't be shamming he can't be shamming we can't be shamming you can't be shamming they can't be shamming
Perfect	V-ing perfect
I can't have shammed you can't have shammed he can't have shammed we can't have shammed you can't have shammed they can't have shammed	I can't have been shamming you can't have been shamming he can't have been shamming we can't have been shamming you can't have been shamming they can't 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't I sham? can't you sham? can't he sham? can't we sham? can't you sham? can't they sham?	can't I be shamming? can't you be shamming? can't he be shamming? can't we be shamming? can't you be shamming? can't they be shamming?
Perfect	V-ing perfect
can't I have shammed? can't you have shammed? can't he have shammed? can't we have shammed? can't you have shammed? can't they have shammed?	can't I have been shamming? can't you have been shamming? can't he have been shamming? can't we have been shamming? can't you have been shamming? can't they have been shamming?