English verb conjugation MUST SAP

Regular verb: sap - sapped - sapped

Affirmation

Simple form

I must sap
you must sap
she must sap
we must sap
you must sap
they must sap

V-ing form

I must be sapping
you must be sapping
she must be sapping
we must be sapping
you must be sapping
they must be sapping

Perfect

I must have sapped
you must have sapped
she must have sapped
we must have sapped
you must have sapped
they must have sapped

V-ing perfect

I must have been sapping
you must have been sapping
she must have been sapping
we must have been sapping
you must have been sapping
they must have been sapping

Negation

Simple form

I mustn't sap
you mustn't sap
she mustn't sap
we mustn't sap
you mustn't sap
they mustn't sap

V-ing form

I mustn't be sapping
you mustn't be sapping
she mustn't be sapping
we mustn't be sapping
you mustn't be sapping
they mustn't be sapping

Perfect

I mustn't have sapped
you mustn't have sapped
she mustn't have sapped
we mustn't have sapped
you mustn't have sapped
they mustn't have sapped

V-ing perfect

I mustn't have been sapping
you mustn't have been sapping
she mustn't have been sapping
we mustn't have been sapping
you mustn't have been sapping
they mustn't have been sapping

Interrogative form

Simple form

must I sap?
must you sap?
must she sap?
must we sap?
must you sap?
must they sap?

V-ing form

must I be sapping?
must you be sapping?
must she be sapping?
must we be sapping?
must you be sapping?
must they be sapping?

Perfect

must I have sapped?
must you have sapped?
must she have sapped?
must we have sapped?
must you have sapped?
must they have sapped?

V-ing perfect

must I have been sapping?
must you have been sapping?
must she have been sapping?
must we have been sapping?
must you have been sapping?
must they have been sapping?

Interro-negative form

Simple form

mustn't I sap?
mustn't you sap?
mustn't she sap?
mustn't we sap?
mustn't you sap?
mustn't they sap?

V-ing form

mustn't I be sapping?
mustn't you be sapping?
mustn't she be sapping?
mustn't we be sapping?
mustn't you be sapping?
mustn't they be sapping?

Perfect

mustn't I have sapped?
mustn't you have sapped?
mustn't she have sapped?
mustn't we have sapped?
mustn't you have sapped?
mustn't they have sapped?

V-ing perfect

mustn't I have been sapping?
mustn't you have been sapping?
mustn't she have been sapping?
mustn't we have been sapping?
mustn't you have been sapping?
mustn't they have been sapping?

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