English verb conjugation
COULD LEASH

Regular verb: leash - leashed - leashed

Affirmation

Simple form	V-ing form
I could leash you could leash he could leash we could leash you could leash they could leash	I could be leashing you could be leashing he could be leashing we could be leashing you could be leashing they could be leashing
Perfect	V-ing perfect
I could have leashed you could have leashed he could have leashed we could have leashed you could have leashed they could have leashed	I could have been leashing you could have been leashing he could have been leashing we could have been leashing you could have been leashing they could have been leashing

Negation

Simple form	V-ing form
I couldn't leash you couldn't leash he couldn't leash we couldn't leash you couldn't leash they couldn't leash	I couldn't be leashing you couldn't be leashing he couldn't be leashing we couldn't be leashing you couldn't be leashing they couldn't be leashing
Perfect	V-ing perfect
I couldn't have leashed you couldn't have leashed he couldn't have leashed we couldn't have leashed you couldn't have leashed they couldn't have leashed	I couldn't have been leashing you couldn't have been leashing he couldn't have been leashing we couldn't have been leashing you couldn't have been leashing they couldn't have been leashing

Interrogative form

Simple form	V-ing form
could I leash? could you leash? could he leash? could we leash? could you leash? could they leash?	could I be leashing? could you be leashing? could he be leashing? could we be leashing? could you be leashing? could they be leashing?
Perfect	V-ing perfect
could I have leashed? could you have leashed? could he have leashed? could we have leashed? could you have leashed? could they have leashed?	could I have been leashing? could you have been leashing? could he have been leashing? could we have been leashing? could you have been leashing? could they have been leashing?

Interro-negative form

Simple form	V-ing form
couldn't I leash? couldn't you leash? couldn't he leash? couldn't we leash? couldn't you leash? couldn't they leash?	couldn't I be leashing? couldn't you be leashing? couldn't he be leashing? couldn't we be leashing? couldn't you be leashing? couldn't they be leashing?
Perfect	V-ing perfect
couldn't I have leashed? couldn't you have leashed? couldn't he have leashed? couldn't we have leashed? couldn't you have leashed? couldn't they have leashed?	couldn't I have been leashing? couldn't you have been leashing? couldn't he have been leashing? couldn't we have been leashing? couldn't you have been leashing? couldn't they have been leashing?