Coaster

P1

R1: 6 sc MR

R2: 6 inc

R3: 6(sc, inc)

R4: 6(sc, inc, sc)

R5: 6(3 sc, inc)

R6: 6(2 sc, inc, 2 sc)

R7: 6(5 sc, inc)

R8: 6(3 sc, inc, 3 sc)

R9: 16(sc, [dc, ch, dc], sc)