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 oughtn't to checkmate you oughtn't to checkmate he oughtn't to checkmate we oughtn't to checkmate you oughtn't to checkmate they oughtn't to checkmate	I oughtn't to be checkmating you oughtn't to be checkmating he oughtn't to be checkmating we oughtn't to be checkmating you oughtn't to be checkmating they oughtn't to be checkmating
Perfect	V-ing perfect
I oughtn't to have checkmated you oughtn't to have checkmated he oughtn't to have checkmated we oughtn't to have checkmated you oughtn't to have checkmated they oughtn't to have checkmated	I oughtn't to have been checkmating you oughtn't to have been checkmating he oughtn't to have been checkmating we oughtn't to have been checkmating you oughtn't to have been checkmating they oughtn't 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
oughtn't I to checkmate? oughtn't you to checkmate? oughtn't he to checkmate? oughtn't we to checkmate? oughtn't you to checkmate? oughtn't they to checkmate?	oughtn't I to be checkmating? oughtn't you to be checkmating? oughtn't he to be checkmating? oughtn't we to be checkmating? oughtn't you to be checkmating? oughtn't they to be checkmating?
Perfect	V-ing perfect
oughtn't I to have checkmated? oughtn't you to have checkmated? oughtn't he to have checkmated? oughtn't we to have checkmated? oughtn't you to have checkmated? oughtn't they to have checkmated?	oughtn't I to have been checkmating? oughtn't you to have been checkmating? oughtn't he to have been checkmating? oughtn't we to have been checkmating? oughtn't you to have been checkmating? oughtn't they to have been checkmating?