I could calcimine you could calcimine he could calcimine we could calcimine you could calcimine they could calcimine
V-ing form
I could be calcimining you could be calcimining he could be calcimining we could be calcimining you could be calcimining they could be calcimining
Perfect
I could have calcimined you could have calcimined he could have calcimined we could have calcimined you could have calcimined they could have calcimined
V-ing perfect
I could have been calcimining you could have been calcimining he could have been calcimining we could have been calcimining you could have been calcimining they could have been calcimining
Negation
Simple form
I could not calcimine you could not calcimine he could not calcimine we could not calcimine you could not calcimine they could not calcimine
V-ing form
I could not be calcimining you could not be calcimining he could not be calcimining we could not be calcimining you could not be calcimining they could not be calcimining
Perfect
I could not have calcimined you could not have calcimined he could not have calcimined we could not have calcimined you could not have calcimined they could not have calcimined
V-ing perfect
I could not have been calcimining you could not have been calcimining he could not have been calcimining we could not have been calcimining you could not have been calcimining they could not have been calcimining
Interrogative form
Simple form
could I calcimine? could you calcimine? could he calcimine? could we calcimine? could you calcimine? could they calcimine?
V-ing form
could I be calcimining? could you be calcimining? could he be calcimining? could we be calcimining? could you be calcimining? could they be calcimining?
Perfect
could I have calcimined? could you have calcimined? could he have calcimined? could we have calcimined? could you have calcimined? could they have calcimined?
V-ing perfect
could I have been calcimining? could you have been calcimining? could he have been calcimining? could we have been calcimining? could you have been calcimining? could they have been calcimining?
Interro-negative form
Simple form
could I not calcimine? could you not calcimine? could he not calcimine? could we not calcimine? could you not calcimine? could they not calcimine?
V-ing form
could I not be calcimining? could you not be calcimining? could he not be calcimining? could we not be calcimining? could you not be calcimining? could they not be calcimining?
Perfect
could I not have calcimined? could you not have calcimined? could he not have calcimined? could we not have calcimined? could you not have calcimined? could they not have calcimined?
V-ing perfect
could I not have been calcimining? could you not have been calcimining? could he not have been calcimining? could we not have been calcimining? could you not have been calcimining? could they not have been calcimining?