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