-er -ic -up b-p b-u bbb bbc bbe bbi bbk bbm bbp bbr bbs bbt bbu bcb bcc bce bci bck bcm bcp bcr bcs bct bcu be- beb bec bee bei bek bem bep ber bes bet beu bi- bib bic bie bii bik bim bip bir bis bit biu bkb bkc bke bkk bkm bkp bkr bks bkt bmb bmc bme bmi bmk bmm bmp bmr bms bmt bmu bpb bpc bpe bpi bpm bpp bpr bps bpt bpu brb bre bri brk brm brp brr brs brt bru bsb bsc bse bsi bsk bsm bsp bsr bss bst bsu btb btc bte bti btk btm btp btr bts btt btu bub buc bue bui buk bum bup bur bus but buu c-- cbb cbc cbe cbi cbk cbm cbp cbr cbs cbt cbu ccb ccc cce cci cck ccm ccp ccr ccs cct ccu ce- ceb cec cee cei cek cem cep cer ces cet ceu ci- cib cic cie cii cik cim cip cir cis cit ciu ckb ckc cki ckm cks ckt cmb cmc cme cmi cmk cmm cmp cmr cms cmt cmu cpb cpc cpe cpi cpk cpm cpp cpr cps cpt cpu crb crc cre cri crk crm crp crr crs crt cru csb csc cse csi csk csm csp csr css cst csu ctb ctc cte cti ctk ctm ctp ctr cts ctt ctu cub cuc cue cui cuk cum cup cur cus cut cuu ebb ebc ebe ebi ebk ebm ebp ebr ebs ebt ebu ec- ecb ecc ece eci eck ecm ecr ecs ect ecu eeb eec eee eek eem eep eer ees eet eib eic eie eii eik eim eip eir eis eit eiu ekb ekc eke eki ekp ekr eks ekt eku em- emb emc eme emi emk emm emp emr ems emt emu ep- epb epc epe epi epm epp epr eps ept epu erb erc ere eri erk erm erp err ers ert eru es- esb esc ese esi esk esm esp esr ess est esu etb etc ete eti etk etm etp etr ets ett etu eu- eub euc eue eui eup eur eus eut ibb ibc ibe ibi ibk ibm ibp ibr ibs ibt ibu icb icc ice ici ick icm icp icr ics ict icu ie- iec iee iei iek iem iep ier ies iet iib iic iie iii iim iip iir iis iit iiu ikb ikc ike iki ikk ikr iks ikt iku im- imb imc ime imi imm imp ims imt imu ipb ipc ipe ipi ipm ipp ipr ips ipt ipu ir- irb irc ire iri irk irm irp irr irs irt iru is- isb isc ise isi isk ism isp isr iss ist isu itb itc ite iti itk itm itp its itt itu iu- iub iuc iue iui ium iup iur ius iut k-t kbb kbc kbe kbi kbk kbm kbp kbr kbs kbu kcb kcc kce kci kck kcm kcp kcr kcs kct kcu ke- keb kec kee kei kek kem kep ker kes ket kib kic kie kii kik kim kip kir kis kit kiu kkb kkc kke kki kkk kkm kkp kkr kks kkt kku kmb kmc kme kmi kmk kmm kmp kms kmt kmu kpc kpe kpi kpk kpm kpp kpr kps kpt kpu krc kri krk krp krr krs krt kru ksb ksc kse ksi ksk ksm ksp ksr kss kst ksu ktb ktc kte ktk ktm ktp ktr kts ktt ktu kub kuc kue kui kuk kum kup kur kus kut kuu m-r mbb mbc mbe mbi mbk mbm mbp mbr mbs mbt mbu mc- mcb mcc mce mci mck mcm mcp mcr mcs mct mcu meb mec mee mei mek mem mep mer mes met meu mi- mib mic mie mii mik mim mip mir mis mit miu mkb mkc mke mkk mkm mkp mkr mks mkt mku mmb mmc mme mmi mmk mmm mmp mmr mms mmt mmu mpb mpc mpe mpi mpk mpm mpp mpr mps mpt mpu mrb mrc mre mri mrk mrm mrp mrr mrs mrt mru msb msc mse msi msk msm msp msr mss mst msu mtb mtc mte mti mtk mtm mtp mtr mts mtt mtu mub muc mue mui muk mum mup mur mus mut muu p-p pbb pbc pbe pbi pbk pbm pbp pbr pbs pbt pbu pcb pcc pce pci pck pcm pcp pcr pcs pct pcu peb pec pee pei pek pem pep per pes pet peu pib pic pie pii pik pim pip pir pis pit piu pkb pkc pke pki pkm pkp pkr pks pkt pku pmb pmc pme pmi pmk pmm pmp pmr pms pmt pmu ppb ppc ppe ppi ppk ppm ppp ppr pps ppt ppu prb prc pre pri prk prm prp prr prs prt pru ps- psb psc pse psi psk psm psp psr pss pst psu pt- ptb ptc pte pti ptk ptm ptp ptr pts ptt ptu pub puc pue pui puk pum pup pur pus put puu rbb rbc rbe rbi rbk rbm rbp rbr rbs rbt rbu rcb rcc rce rci rcm rcp rcr rcs rct rcu re- reb rec ree rei rek rem rep rer res ret reu rib ric rie rii rik rim rip rir ris rit rkb rkc rke rkk rkm rkp rks rkt rku rmb rmc rme rmi rmm rmp rmr rms rmt rpb rpc rpe rpi rpk rpm rpp rpr rps rpt rpu rrb rrc rri rrk rrm rrp rrr rrs rrt rru rsb rsc rse rsi rsk rsm rsp rsr rss rst rsu rtb rtc rte rti rtk rtm rtp rtr rts rtt rtu rub ruc rue rui ruk rum rup rur rus rut ruu sbb sbc sbe sbi sbk sbm sbp sbr sbs sbt sbu scb scc sce sci sck scm scp scr scs sct scu se- seb sec see sei sek sem sep ser ses set seu sib sic sie sii sik sim sip sir sis sit siu sk- skb skc ske