r---- [rf]-d f g d f- r f d f g d f- r-d f g d f- r f d f gfd f- [0f]-d f g d f- 0 f d f gfd f- 0-d f g d f- 0 f d f gfd s a 0-p a s p a- q a p a sap a- 0-p a s p a- 0 p a s dsapasa 0 s pas a p asdf[0g] d f- q-d f g d fgfd [0s]-asd f s d- 0 s asd f s d f [qf]-d f [0g] d f- q f d f [0g]fd f- 3-dfg f s d a p-opa p i o y [0u]-y u i y u- 0 u yui o y u 7 3-y u i y u 0 7 u yui o p asa 0sa p a s p a- q a pas d p asd [rf]-d f gfd fgf r f dfg h d f y 0-d f g d f- 0-d f g d f- q f d f g d f- 0 f d f gfd f- 3-gfd f-- gfd f--[ig] [yd] [tf] r--- 3