1/2 S 3/4 S S 1 S S S 1-1/4 S S S S 1-1/2 S S S S S 2 H H H H B B 2-1/2 H H H H H B B 3 H H H H H B B B 3-1/2 H H H H H B B B B 4 H H H H H B B B B B 5 H H H H H R B B B B B 6 H H H H H R R B B B B B 8 H H H H H R R R R B B B B 10 H H H H H R R R R R B B B B 12 H H H H H R R R R R R B B B B 14 H H H H H R R R R R R F F F F F 16 H H H H H R R R R R R R F F F F F 18 H H H H H R R R R R R R R F F F F