English verb conjugation
OUGHT TO CHECKMATE

Regular verb: checkmate - checkmated - checkmated

Affirmation

Simple form	V-ing form
I ought to checkmate you ought to checkmate he ought to checkmate we ought to checkmate you ought to checkmate they ought to checkmate	I ought to be checkmating you ought to be checkmating he ought to be checkmating we ought to be checkmating you ought to be checkmating they ought to be checkmating
Perfect	V-ing perfect
I ought to have checkmated you ought to have checkmated he ought to have checkmated we ought to have checkmated you ought to have checkmated they ought to have checkmated	I ought to have been checkmating you ought to have been checkmating he ought to have been checkmating we ought to have been checkmating you ought to have been checkmating they ought to have been checkmating

Negation

Simple form	V-ing form
I ought not to checkmate you ought not to checkmate he ought not to checkmate we ought not to checkmate you ought not to checkmate they ought not to checkmate	I ought not to checkmating you ought not to checkmating he ought not to checkmating we ought not to checkmating you ought not to checkmating they ought not to checkmating
Perfect	V-ing perfect
I ought not to have checkmated you ought not to have checkmated he ought not to have checkmated we ought not to have checkmated you ought not to have checkmated they ought not to have checkmated	I ought not to have been checkmating you ought not to have been checkmating he ought not to have been checkmating we ought not to have been checkmating you ought not to have been checkmating they ought not to have been checkmating

Interrogative form

Simple form	V-ing form
ought to I checkmate? ought to you checkmate? ought to he checkmate? ought to we checkmate? ought to you checkmate? ought to they checkmate?	ought to I be checkmating? ought to you be checkmating? ought to he be checkmating? ought to we be checkmating? ought to you be checkmating? ought to they be checkmating?
Perfect	V-ing perfect
ought to I have checkmated? ought to you have checkmated? ought to he have checkmated? ought to we have checkmated? ought to you have checkmated? ought to they have checkmated?	ought to I have been checkmating? ought to you have been checkmating? ought to he have been checkmating? ought to we have been checkmating? ought to you have been checkmating? ought to they have been checkmating?

Interro-negative form

Simple form	V-ing form
ought I not to checkmate? ought you not to checkmate? ought he not to checkmate? ought we not to checkmate? ought you not to checkmate? ought they not to checkmate?	ought I not to be checkmating? ought you not to be checkmating? ought he not to be checkmating? ought we not to be checkmating? ought you not to be checkmating? ought they not to be checkmating?
Perfect	V-ing perfect
ought I not to have checkmated? ought you not to have checkmated? ought he not to have checkmated? ought we not to have checkmated? ought you not to have checkmated? ought they not to have checkmated?	ought I not to have been checkmating? ought you not to have been checkmating? ought he not to have been checkmating? ought we not to have been checkmating? ought you not to have been checkmating? ought they not to have been checkmating?