-er -up c-- ccc ccd cce ccm ccp ccr ccu cdc cdd cde cdm cdp cdr cdu ce- cec ced cee cem cep cer ceu cmc cmd cme cmm cmp cmr cmu cpc cpd cpe cpm cpp cpr cpu crc crd cre crm crp crr cru cuc cud cue cum cup cur cuu dcc dcd dce dcm dcp dcr dcu ddc ddd dde ddm ddp ddr ddu de- dec ded dee dem dep der deu dmc dmd dme dmm dmp dmr dmu dpc dpd dpe dpm dpp dpr dpu drc drd dre drm drp drr dru duc dud due dum dup dur ec- ecc ecd ece ecm ecr ecu ed- edc edd ede edm edp edr edu eec eed eee eem eep eer em- emc emd eme emm emp emr emu ep- epc epd epe epm epp epr epu erc erd ere erm erp err eru eu- euc eud eue eup eur m-r mc- mcc mcd mce mcm mcp mcr mcu mdc mdd mde mdm mdp mdr mdu mec med mee mem mep mer meu mmc mmd mme mmm mmp mmr mmu mpc mpd mpe mpm mpp mpr mpu mrc mrd mre mrm mrp mrr mru muc mud mue mum mup mur muu p-p pcc pcd pce pcm pcp pcr pcu pdc pdd pde pdm pdp pdr pdu pec ped pee pem pep per peu pmc pmd pme pmm pmp pmr pmu ppc ppd ppe ppm ppp ppr ppu prc prd pre prm prp prr pru puc pud pue pum pup pur puu rcc rcd rce rcm rcp rcr rcu rdc rdd rde rdm rdp rdr rdu re- rec red ree rem rep rer reu rmc rmd rme rmm rmp rmr rpc rpd rpe rpm rpp rpr rpu rrc rrd rrm rrp rrr rru ruc rud rue rum rup rur ruu ucc ucd uce ucm ucp ucr ucu udc udd ude udm udp udr udu uec ued uee uem uep uer um- umc umd ume umm ump umr umu up- upc upd upe upm upp upr upu ur- urc urd ure urm urp urr uru uuc uue uum uur uuu