-up a-a a-c aaa aac aap aar aas aau ac- aca acc acp acr acs acu ap- apa apc app apr aps apu ar- ara arc arp arr ars aru as- asa asc asp asr ass asu au- aua auc aup aur aus c-- caa cac cap car cas cau cca ccc ccp ccr ccs ccu cpa cpc cpp cpr cps cpu cra crc crp crr crs cru csa csc csp csr css csu cua cuc cup cur cus cuu p-p paa pac pap par pas pau pca pcc pcp pcr pcs pcu ppa ppc ppp ppr pps ppu pra prc prp prr prs pru ps- psa psc psp psr pss psu pua puc pup pur pus puu ra- raa rac rap rar ras rau rca rcc rcp rcr rcs rcu rpa rpc rpp rpr rps rpu rra rrc rrp rrr rrs rru rsa rsc rsp rsr rss rsu rua ruc rup rur rus ruu saa sac sap sar sas sau sca scc scp scr scs scu spa spc spp spr sps spu sr- sra src srp srr srs ss- ssa ssc ssp ssr sss ssu sua suc sup sur sus suu ua- uaa uac uap uar uas uau uca ucc ucp ucr ucs ucu up- upa upc upp upr ups upu ur- ura urc urp urr urs uru usa usc usp usr uss usu uua uuc uur uus uuu