-up b-p b-u bbb bbn bbp bbr bbs bbu bnb bnn bnp bnr bns bnu bpb bpn bpp bpr bps bpu brb brn brp brr brs bru bsb bsn bsp bsr bss bsu bub bun bup bur bus buu nbb nbn nbp nbr nbs nbu nnb nnn nnp nns nnu npb npn npp npr nps npu nrb nrn nrp nrr nrs nru nsb nsn nsp nsr nss nsu nub nun nup nur nus nuu p-p pbb pbn pbp pbr pbs pbu pn- pnb pnn pnp pnr pns pnu ppb ppn ppp ppr pps ppu prb prn prp prr prs pru ps- psb psn psp psr pss psu pub pun pup pur pus puu rbb rbn rbp rbr rbs rbu rnb rnn rnp rnr rns rnu rpb rpn rpp rpr rps rpu rrb rrn rrp rrr rrs rru rsb rsn rsp rsr rss rsu rub run rup rur rus ruu sbb sbn sbp sbr sbs sbu snb snn snp snr sns snu spb spn spp spr sps spu sr- srb srn srp srr srs ss- ssb ssn ssp ssr sss ssu sub sun sup sur sus suu ubb ubn ubp ubr ubs ubu un- unb unn unp unr uns unu up- upb upn upp upr ups upu ur- urb urn urp urr urs uru usb usn usp usr uss usu uun uur uus uuu