-up nnn nnp nns nnt nnu npn npp npr nps npt npu nrn nrp nrr nrs nrt nru nsn nsp nsr nss nst nsu ntn ntp ntr nts ntt ntu nun nup nur nus nut nuu p-p pn- pnn pnp pnr pns pnt pnu ppn ppp ppr pps ppt ppu prn prp prr prs prt pru ps- psn psp psr pss pst psu pt- ptn ptp ptr pts ptt ptu pun pup pur pus put puu rnn rnp rnr rns rnt rnu rpn rpp rpr rps rpt rpu rrn rrp rrr rrs rrt rru rsn rsp rsr rss rst rsu rtn rtp rtr rts rtt rtu run rup rur rus rut ruu snn snp snr sns snt snu spn spp spr sps spt spu sr- srn srp srr srs srt ss- ssn ssp ssr sss sst ssu stn stp str sts stt stu sun sup sur sus sut suu tnn tnp tnr tns tnt tpn tpp tpr tps tpt tpu trn trp trr trs trt tru tsn tsp tsr tss tst tsu ttn ttp ttr tts ttt ttu tun tup tur tus tut tuu un- unn unp unr uns unt unu up- upn upp upr ups upt upu ur- urn urp urr urs urt uru usn usp usr uss ust usu utn utp utr uts utt utu uun uur uus uut uuu