English verb conjugation
COULD SWASH

Regular verb: swash - swashed - swashed

Affirmation

Simple form	V-ing form
I could swash you could swash he could swash we could swash you could swash they could swash	I could be swashing you could be swashing he could be swashing we could be swashing you could be swashing they could be swashing
Perfect	V-ing perfect
I could have swashed you could have swashed he could have swashed we could have swashed you could have swashed they could have swashed	I could have been swashing you could have been swashing he could have been swashing we could have been swashing you could have been swashing they could have been swashing

Negation

Simple form	V-ing form
I couldn't swash you couldn't swash he couldn't swash we couldn't swash you couldn't swash they couldn't swash	I couldn't be swashing you couldn't be swashing he couldn't be swashing we couldn't be swashing you couldn't be swashing they couldn't be swashing
Perfect	V-ing perfect
I couldn't have swashed you couldn't have swashed he couldn't have swashed we couldn't have swashed you couldn't have swashed they couldn't have swashed	I couldn't have been swashing you couldn't have been swashing he couldn't have been swashing we couldn't have been swashing you couldn't have been swashing they couldn't have been swashing

Interrogative form

Simple form	V-ing form
could I swash? could you swash? could he swash? could we swash? could you swash? could they swash?	could I be swashing? could you be swashing? could he be swashing? could we be swashing? could you be swashing? could they be swashing?
Perfect	V-ing perfect
could I have swashed? could you have swashed? could he have swashed? could we have swashed? could you have swashed? could they have swashed?	could I have been swashing? could you have been swashing? could he have been swashing? could we have been swashing? could you have been swashing? could they have been swashing?

Interro-negative form

Simple form	V-ing form
couldn't I swash? couldn't you swash? couldn't he swash? couldn't we swash? couldn't you swash? couldn't they swash?	couldn't I be swashing? couldn't you be swashing? couldn't he be swashing? couldn't we be swashing? couldn't you be swashing? couldn't they be swashing?
Perfect	V-ing perfect
couldn't I have swashed? couldn't you have swashed? couldn't he have swashed? couldn't we have swashed? couldn't you have swashed? couldn't they have swashed?	couldn't I have been swashing? couldn't you have been swashing? couldn't he have been swashing? couldn't we have been swashing? couldn't you have been swashing? couldn't they have been swashing?