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