p691 q691q r691q8 s691 t691q
exa2q fxa2q8 gxa2 hxa2q ixa2q8
3nb2q8 4nb2 5nb2q 6nb2q8 7nb2
sec2 tec2q uec2q8 vec2 wec2q
h5c2q i5c2q8 j5c2 k5c2q l5c2q8