I can escalate you can escalate he can escalate we can escalate you can escalate they can escalate
V-ing form
I can be escalating you can be escalating he can be escalating we can be escalating you can be escalating they can be escalating
Perfect
I can have escalated you can have escalated he can have escalated we can have escalated you can have escalated they can have escalated
V-ing perfect
I can have been escalating you can have been escalating he can have been escalating we can have been escalating you can have been escalating they can have been escalating
Negation
Simple form
I cannot escalate you cannot escalate he cannot escalate we cannot escalate you cannot escalate they cannot escalate
V-ing form
I cannot be escalating you cannot be escalating he cannot be escalating we cannot be escalating you cannot be escalating they cannot be escalating
Perfect
I cannot have escalated you cannot have escalated he cannot have escalated we cannot have escalated you cannot have escalated they cannot have escalated
V-ing perfect
I cannot have been escalating you cannot have been escalating he cannot have been escalating we cannot have been escalating you cannot have been escalating they cannot have been escalating
Interrogative form
Simple form
can I escalate? can you escalate? can he escalate? can we escalate? can you escalate? can they escalate?
V-ing form
can I be escalating? can you be escalating? can he be escalating? can we be escalating? can you be escalating? can they be escalating?
Perfect
can I have escalated? can you have escalated? can he have escalated? can we have escalated? can you have escalated? can they have escalated?
V-ing perfect
can I have been escalating? can you have been escalating? can he have been escalating? can we have been escalating? can you have been escalating? can they have been escalating?
Interro-negative form
Simple form
can I not escalate? can you not escalate? can he not escalate? can we not escalate? can you not escalate? can they not escalate?
V-ing form
can I not be escalating? can you not be escalating? can he not be escalating? can we not be escalating? can you not be escalating? can they not be escalating?
Perfect
can I not have escalated? can you not have escalated? can he not have escalated? can we not have escalated? can you not have escalated? can they not have escalated?
V-ing perfect
can I not have been escalating? can you not have been escalating? can he not have been escalating? can we not have been escalating? can you not have been escalating? can they not have been escalating?