English verb conjugation
SHALL DOUBLE-BILL

Regular verb: double-bill - double-billed - double-billed

Affirmation

Simple form	V-ing form
I shall double-bill you shall double-bill he shall double-bill we shall double-bill you shall double-bill they shall double-bill	I shall be double-billing you shall be double-billing he shall be double-billing we shall be double-billing you shall be double-billing they shall be double-billing
Perfect	V-ing perfect
I shall have double-billed you shall have double-billed he shall have double-billed we shall have double-billed you shall have double-billed they shall have double-billed	I shall have been double-billing you shall have been double-billing he shall have been double-billing we shall have been double-billing you shall have been double-billing they shall have been double-billing

Negation

Simple form	V-ing form
I shall not double-bill you shall not double-bill he shall not double-bill we shall not double-bill you shall not double-bill they shall not double-bill	I shall not be double-billing you shall not be double-billing he shall not be double-billing we shall not be double-billing you shall not be double-billing they shall not be double-billing
Perfect	V-ing perfect
I shall not have double-billed you shall not have double-billed he shall not have double-billed we shall not have double-billed you shall not have double-billed they shall not have double-billed	I shall not have been double-billing you shall not have been double-billing he shall not have been double-billing we shall not have been double-billing you shall not have been double-billing they shall not have been double-billing

Interrogative form

Simple form	V-ing form
shall I double-bill? shall you double-bill? shall he double-bill? shall we double-bill? shall you double-bill? shall they double-bill?	shall I be double-billing? shall you be double-billing? shall he be double-billing? shall we be double-billing? shall you be double-billing? shall they be double-billing?
Perfect	V-ing perfect
shall I have double-billed? shall you have double-billed? shall he have double-billed? shall we have double-billed? shall you have double-billed? shall they have double-billed?	shall I have been double-billing? shall you have been double-billing? shall he have been double-billing? shall we have been double-billing? shall you have been double-billing? shall they have been double-billing?

Interro-negative form

Simple form	V-ing form
shall I not double-bill? shall you not double-bill? shall he not double-bill? shall we not double-bill? shall you not double-bill? shall they not double-bill?	shall I not be double-billing? shall you not be double-billing? shall he not be double-billing? shall we not be double-billing? shall you not be double-billing? shall they not be double-billing?
Perfect	V-ing perfect
shall I not have double-billed? shall you not have double-billed? shall he not have double-billed? shall we not have double-billed? shall you not have double-billed? shall they not have double-billed?	shall I not have been double-billing? shall you not have been double-billing? shall he not have been double-billing? shall we not have been double-billing? shall you not have been double-billing? shall they not have been double-billing?