-up b-p b-u bbb bbm bbp bbs bbu bmb bmm bmp bms bmu bpb bpm bpp bps bpu bsb bsm bsp bss bsu bub bum bup bus buu mbb mbm mbp mbs mbu mmb mmm mmp mms mmu mpb mpm mpp mps mpu msb msm msp mss msu mub mum mup mus muu p-p pbb pbm pbp pbs pbu pmb pmm pmp pms pmu ppb ppm ppp pps ppu ps- psb psm psp pss psu pub pum pup pus puu sbb sbm sbp sbs sbu smb smm smp sms smu spb spm spp sps spu ss- ssb ssm ssp sss ssu sub sum sup sus suu ubb ubp ubs ubu um- umb umm ump ums umu up- upb upm upp ups upu usb usm usp uss usu uum uus uuu