English verb conjugation
COULD SHELTER

Regular verb: shelter - sheltered - sheltered

Affirmation

Simple form	V-ing form
I could shelter you could shelter she could shelter we could shelter you could shelter they could shelter	I could be sheltering you could be sheltering she could be sheltering we could be sheltering you could be sheltering they could be sheltering
Perfect	V-ing perfect
I could have sheltered you could have sheltered she could have sheltered we could have sheltered you could have sheltered they could have sheltered	I could have been sheltering you could have been sheltering she could have been sheltering we could have been sheltering you could have been sheltering they could have been sheltering

Negation

Simple form	V-ing form
I couldn't shelter you couldn't shelter she couldn't shelter we couldn't shelter you couldn't shelter they couldn't shelter	I couldn't be sheltering you couldn't be sheltering she couldn't be sheltering we couldn't be sheltering you couldn't be sheltering they couldn't be sheltering
Perfect	V-ing perfect
I couldn't have sheltered you couldn't have sheltered she couldn't have sheltered we couldn't have sheltered you couldn't have sheltered they couldn't have sheltered	I couldn't have been sheltering you couldn't have been sheltering she couldn't have been sheltering we couldn't have been sheltering you couldn't have been sheltering they couldn't have been sheltering

Interrogative form

Simple form	V-ing form
could I shelter? could you shelter? could she shelter? could we shelter? could you shelter? could they shelter?	could I be sheltering? could you be sheltering? could she be sheltering? could we be sheltering? could you be sheltering? could they be sheltering?
Perfect	V-ing perfect
could I have sheltered? could you have sheltered? could she have sheltered? could we have sheltered? could you have sheltered? could they have sheltered?	could I have been sheltering? could you have been sheltering? could she have been sheltering? could we have been sheltering? could you have been sheltering? could they have been sheltering?

Interro-negative form

Simple form	V-ing form
couldn't I shelter? couldn't you shelter? couldn't she shelter? couldn't we shelter? couldn't you shelter? couldn't they shelter?	couldn't I be sheltering? couldn't you be sheltering? couldn't she be sheltering? couldn't we be sheltering? couldn't you be sheltering? couldn't they be sheltering?
Perfect	V-ing perfect
couldn't I have sheltered? couldn't you have sheltered? couldn't she have sheltered? couldn't we have sheltered? couldn't you have sheltered? couldn't they have sheltered?	couldn't I have been sheltering? couldn't you have been sheltering? couldn't she have been sheltering? couldn't we have been sheltering? couldn't you have been sheltering? couldn't they have been sheltering?