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