I could etherealise you could etherealise she could etherealise we could etherealise you could etherealise they could etherealise
V-ing form
I could be etherealising you could be etherealising she could be etherealising we could be etherealising you could be etherealising they could be etherealising
Perfect
I could have etherealised you could have etherealised she could have etherealised we could have etherealised you could have etherealised they could have etherealised
V-ing perfect
I could have been etherealising you could have been etherealising she could have been etherealising we could have been etherealising you could have been etherealising they could have been etherealising
Negation
Simple form
I couldn't etherealise you couldn't etherealise she couldn't etherealise we couldn't etherealise you couldn't etherealise they couldn't etherealise
V-ing form
I couldn't be etherealising you couldn't be etherealising she couldn't be etherealising we couldn't be etherealising you couldn't be etherealising they couldn't be etherealising
Perfect
I couldn't have etherealised you couldn't have etherealised she couldn't have etherealised we couldn't have etherealised you couldn't have etherealised they couldn't have etherealised
V-ing perfect
I couldn't have been etherealising you couldn't have been etherealising she couldn't have been etherealising we couldn't have been etherealising you couldn't have been etherealising they couldn't have been etherealising
Interrogative form
Simple form
could I etherealise? could you etherealise? could she etherealise? could we etherealise? could you etherealise? could they etherealise?
V-ing form
could I be etherealising? could you be etherealising? could she be etherealising? could we be etherealising? could you be etherealising? could they be etherealising?
Perfect
could I have etherealised? could you have etherealised? could she have etherealised? could we have etherealised? could you have etherealised? could they have etherealised?
V-ing perfect
could I have been etherealising? could you have been etherealising? could she have been etherealising? could we have been etherealising? could you have been etherealising? could they have been etherealising?
Interro-negative form
Simple form
couldn't I etherealise? couldn't you etherealise? couldn't she etherealise? couldn't we etherealise? couldn't you etherealise? couldn't they etherealise?
V-ing form
couldn't I be etherealising? couldn't you be etherealising? couldn't she be etherealising? couldn't we be etherealising? couldn't you be etherealising? couldn't they be etherealising?
Perfect
couldn't I have etherealised? couldn't you have etherealised? couldn't she have etherealised? couldn't we have etherealised? couldn't you have etherealised? couldn't they have etherealised?
V-ing perfect
couldn't I have been etherealising? couldn't you have been etherealising? couldn't she have been etherealising? couldn't we have been etherealising? couldn't you have been etherealising? couldn't they have been etherealising?