shall grub
Regular verb: grub - grubbed- grubbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall grub
you shall grub
she shall grub
we shall grub
you shall grub
they shall grub 	I shall be grubbing
you shall be grubbing
she shall be grubbing
we shall be grubbing
you shall be grubbing
they shall be grubbing	I shall have grubbed
you shall have grubbed
she shall have grubbed
we shall have grubbed
you shall have grubbed
they shall have grubbed	I shall have been grubbing
you shall have been grubbing
she shall have been grubbing
we shall have been grubbing
you shall have been grubbing
they shall have been grubbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall not grub
you shall not grub
she shall not grub
we shall not grub
you shall not grub
they shall not grub 	I shall not be grubbing
you shall not be grubbing
she shall not be grubbing
we shall not be grubbing
you shall not be grubbing
they shall not be grubbing	I shall not have grubbed
you shall not have grubbed
she shall not have grubbed
we shall not have grubbed
you shall not have grubbed
they shall not have grubbed	I shall not have been grubbing
you shall not have been grubbing
she shall not have been grubbing
we shall not have been grubbing
you shall not have been grubbing
they shall not have been grubbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I grub?
shall you grub?
shall she grub?
shall we grub?
shall you grub?
shall they grub? 	shall I be grubbing?
shall you be grubbing?
shall she be grubbing?
shall we be grubbing?
shall you be grubbing?
shall they be grubbing? 	shall I have grubbed?
shall you have grubbed?
shall she have grubbed?
shall we have grubbed?
shall you have grubbed?
shall they have grubbed? 	shall I have been grubbing?
shall you have been grubbing?
shall she have been grubbing?
shall we have been grubbing?
shall you have been grubbing?
shall they have been grubbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I not grub?
shall you not grub?
shall she not grub?
shall we not grub?
shall you not grub?
shall they not grub? 	shall I not be grubbing?
shall you not be grubbing?
shall she not be grubbing?
shall we not be grubbing?
shall you not be grubbing?
shall they not be grubbing? 	shall I not have grubbed?
shall you not have grubbed?
shall she not have grubbed?
shall we not have grubbed?
shall you not have grubbed?
shall they not have grubbed? 	shall I not have been grubbing?
shall you not have been grubbing?
shall she not have been grubbing?
shall we not have been grubbing?
shall you not have been grubbing?
shall they not have been grubbing?