-er -up a-a a-c aaa aac aad aae aap aar aau ac- aca acc acd ace acp acr acu ad- ada adc add ade adp adr adu aea aec aed aee aep aer aeu ap- apa apc apd ape app apr apu ar- ara arc ard are arp arr aru au- aua auc aud aue aup aur c-- caa cac cad cae cap car cau cca ccc ccd cce ccp ccr ccu cda cdc cdd cde cdp cdr cdu ce- cea cec ced cee cep cer ceu cpa cpc cpd cpe cpp cpr cpu cra crc crd cre crp crr cru cua cuc cud cue cup cur cuu daa dac dad dae dap dar dau dca dcc dcd dce dcp dcr dcu dda ddc ddd dde ddp ddr ddu de- dea dec ded dee dep der deu dpa dpc dpd dpe dpp dpr dpu dra drc drd dre drp drr dru dua duc dud due dup dur eaa eac ead eae eap ear eau ec- eca ecc ecd ece ecr ecu ed- eda edc edd ede edp edr edu eea eec eed eee eep eer ep- epa epc epd epe epp epr epu era erc erd ere erp err eru eu- eua euc eud eue eup eur p-p paa pac pad pae pap par pau pca pcc pcd pce pcp pcr pcu pda pdc pdd pde pdp pdr pdu pea pec ped pee pep per peu ppa ppc ppd ppe ppp ppr ppu pra prc prd pre prp prr pru pua puc pud pue pup pur puu ra- raa rac rad rae rap rar rau rca rcc rcd rce rcp rcr rcu rda rdc rdd rde rdp rdr rdu re- rea rec red ree rep rer reu rpa rpc rpd rpe rpp rpr rpu rra rrc rrd rrp rrr rru rua ruc rud rue rup rur ruu ua- uaa uac uad uae uap uar uau uca ucc ucd uce ucp ucr ucu uda udc udd ude udp udr udu uea uec ued uee uep uer up- upa upc upd upe upp upr upu ur- ura urc urd ure urp urr uru uua uuc uue uur uuu