Cand folosim "neam" si cand folosim "ne-am"

Cand folosim "nea" si cand folosim "ne-a"

Cand folosim "la" si cand folosim "l-a"

Cand folosim "iau" si cand folosim "i-au"

Cand folosim "ia" si cand folosim "i-a"

Cand folosim "sau" si cand folosim "s-au"?