-up a-a a-c a-t aaa aac aap aar aat aau aax ac- aca acc acp acr act acu acx ap- apa apc app apr apt apu apx ar- ara arc arp arr art aru arx at- ata atc atp atr att atu atx au- aua auc aup aur aut aux ax- axa axp axr axt axx c-- caa cac cap car cat cau cax cca ccc ccp ccr cct ccu ccx cpa cpc cpp cpr cpt cpu cpx cra crc crp crr crt cru crx cta ctc ctp ctr ctt ctu ctx cua cuc cup cur cut cuu cxc cxp cxr cxt cxx p-p paa pac pap par pat pau pax pca pcc pcp pcr pct pcu pcx ppa ppc ppp ppr ppt ppu ppx pra prc prp prr prt pru prx pt- pta ptc ptp ptr ptt ptu ptx pua puc pup pur put puu pxc pxr pxt ra- raa rac rap rar rat rau rax rca rcc rcp rcr rct rcu rcx rpa rpc rpp rpr rpt rpu rpx rra rrc rrp rrr rrt rru rta rtc rtp rtr rtt rtu rtx rua ruc rup rur rut ruu rux rxp rxr t-x taa tac tap tar tat tau tax tca tcc tcp tcr tct tcu tcx tpa tpc tpp tpr tpt tpu tpx tra trc trp trr trt tru trx tta ttc ttp ttr ttt ttu ttx tua tuc tup tur tut tuu tux txt txu ua- uaa uac uap uar uat uau uca ucc ucp ucr uct ucu up- upa upc upp upr upt upu upx ur- ura urc urp urr urt uru urx uta utc utp utr utt utu utx uua uuc uur uut uuu uxc uxr uxt uxu xaa xac xap xar xat xau xcp xcr xcx xpa xpc xpp xpt xrc xrt xrx xtc xtp xtr xtx xup xxp xxx