I could splash you could splash he could splash we could splash you could splash they could splash
V-ing form
I could be splashing you could be splashing he could be splashing we could be splashing you could be splashing they could be splashing
Perfect
I could have splashed you could have splashed he could have splashed we could have splashed you could have splashed they could have splashed
V-ing perfect
I could have been splashing you could have been splashing he could have been splashing we could have been splashing you could have been splashing they could have been splashing
Negation
Simple form
I couldn't splash you couldn't splash he couldn't splash we couldn't splash you couldn't splash they couldn't splash
V-ing form
I couldn't be splashing you couldn't be splashing he couldn't be splashing we couldn't be splashing you couldn't be splashing they couldn't be splashing
Perfect
I couldn't have splashed you couldn't have splashed he couldn't have splashed we couldn't have splashed you couldn't have splashed they couldn't have splashed
V-ing perfect
I couldn't have been splashing you couldn't have been splashing he couldn't have been splashing we couldn't have been splashing you couldn't have been splashing they couldn't have been splashing
Interrogative form
Simple form
could I splash? could you splash? could he splash? could we splash? could you splash? could they splash?
V-ing form
could I be splashing? could you be splashing? could he be splashing? could we be splashing? could you be splashing? could they be splashing?
Perfect
could I have splashed? could you have splashed? could he have splashed? could we have splashed? could you have splashed? could they have splashed?
V-ing perfect
could I have been splashing? could you have been splashing? could he have been splashing? could we have been splashing? could you have been splashing? could they have been splashing?
Interro-negative form
Simple form
couldn't I splash? couldn't you splash? couldn't he splash? couldn't we splash? couldn't you splash? couldn't they splash?
V-ing form
couldn't I be splashing? couldn't you be splashing? couldn't he be splashing? couldn't we be splashing? couldn't you be splashing? couldn't they be splashing?
Perfect
couldn't I have splashed? couldn't you have splashed? couldn't he have splashed? couldn't we have splashed? couldn't you have splashed? couldn't they have splashed?
V-ing perfect
couldn't I have been splashing? couldn't you have been splashing? couldn't he have been splashing? couldn't we have been splashing? couldn't you have been splashing? couldn't they have been splashing?