The following chart gives a convenient one-stop place to compare and contrast the various verbal formulas. Use the following along with the Four-Quad chart to understand verbal formations.

See the verbal endings here.

	aug.	stem	connector	verbal ending
Aorist Active		stem	+ σα +	B
Aorist Middle		stem	+ σα +	D
Aorist Passive		stem, may change	+ θη +	B
Future Active			+ σ + c.v. +	A
Future Middle			+ σ + c.v. +	C
Future Passive		same as Aorist passive stem	+ θησ + c.v. +	C
Imperfect Active			+ c.v. +	B
Imperfect Middle			+ c.v. +	D
Perfect Active		stem, may change	+ κα +	A
Perfect Middle		stem, may change	+	C
Present Active			+ c.v. +	A
Present Middle			+ c.v. +	C
Second Aorist Active		aor. stem	+ c.v. +	B
Second Aorist Middle		aor. stem	+ c.v. +	D

c.v. = connecting vowel, aug. = augment