-er -ic -up b-p b-u bbb bbc bbd bbe bbi bbp bbr bbs bbu bcb bcc bcd bce bci bcp bcr bcs bcu bdb bdc bdd bde bdi bdp bdr bds bdu be- beb bec bed bee bei bep ber bes beu bi- bib bic bid bie bii bip bir bis biu bpb bpc bpd bpe bpi bpp bpr bps bpu brb brd bre bri brp brr brs bru bsb bsc bsd bse bsi bsp bsr bss bsu bub buc bud bue bui bup bur bus buu c-- cbb cbc cbd cbe cbi cbp cbr cbs cbu ccb ccc ccd cce cci ccp ccr ccs ccu cdb cdc cdd cde cdi cdp cdr cds cdu ce- ceb cec ced cee cei cep cer ces ceu ci- cib cic cid cie cii cip cir cis ciu cpb cpc cpd cpe cpi cpp cpr cps cpu crb crc crd cre cri crp crr crs cru csb csc csd cse csi csp csr css csu cub cuc cud cue cui cup cur cus cuu dbb dbc dbd dbe dbi dbp dbr dbs dbu dcb dcc dcd dce dci dcp dcr dcs dcu ddb ddc ddd dde ddi ddp ddr dds ddu de- deb dec ded dee dei dep der des deu di- dib dic did die dii dip dir dis diu dpb dpc dpd dpe dpi dpp dpr dps dpu drb drc drd dre dri drp drr drs dru dsb dsc dsd dse dsi dsp dsr dss dsu dub duc dud due dui dup dur dus ebb ebc ebd ebe ebi ebp ebr ebs ebu ec- ecb ecc ecd ece eci ecr ecs ecu ed- edb edc edd ede edi edp edr eds edu eeb eec eed eee eep eer ees eib eic eid eie eii eip eir eis eiu ep- epb epc epd epe epi epp epr eps epu erb erc erd ere eri erp err ers eru es- esb esc esd ese esi esp esr ess esu eu- eub euc eud eue eui eup eur eus i-d ibb ibc ibd ibe ibi ibp ibr ibs ibu icb icc icd ice ici icp icr ics icu idb idc idd ide idi idp idr ids idu ie- iec ied iee iei iep ier ies iib iic iid iie iii iip iir iis iiu ipb ipc ipd ipe ipi ipp ipr ips ipu ir- irb irc ird ire iri irp irr irs iru is- isb isc isd ise isi isp isr iss isu iu- iub iuc iud iue iui iup iur ius p-p pbb pbc pbd pbe pbi pbp pbr pbs pbu pcb pcc pcd pce pci pcp pcr pcs pcu pdb pdc pdd pde pdi pdp pdr pds pdu peb pec ped pee pei pep per pes peu pib pic pid pie pii pip pir pis piu ppb ppc ppd ppe ppi ppp ppr pps ppu prb prc prd pre pri prp prr prs pru ps- psb psc psd pse psi psp psr pss psu pub puc pud pue pui pup pur pus puu rbb rbc rbd rbe rbi rbp rbr rbs rbu rcb rcc rcd rce rci rcp rcr rcs rcu rdb rdc rdd rde rdi rdp rdr rds rdu re- reb rec red ree rei rep rer res reu rib ric rid rie rii rip rir ris rpb rpc rpd rpe rpi rpp rpr rps rpu rrb rrc rrd rri rrp rrr rrs rru rsb rsc rsd rse rsi rsp rsr rss rsu rub ruc rud rue rui rup rur rus ruu sbb sbc sbd sbe sbi sbp sbr sbs sbu scb scc scd sce sci scp scr scs scu sdb sdc sdd sde sdi sdp sdr sds sdu se- seb sec sed see sei sep ser ses seu sib sic sid sie sii sip sir sis siu spb spc spd spe spi spp spr sps spu sr- srb src srd sre sri srp srr srs ss- ssb ssc ssd sse ssi ssp ssr sss ssu sub suc sud sue sui sup sur sus suu ubb ubc ube ubi ubp ubr ubs ubu ucb ucc ucd uce uci ucp ucr ucs ucu udb udc udd ude udi udp udr uds udu ueb uec ued uee uei uep uer ues uib uic uid uie uii uip uir uis uiu up- upb upc upd upe upi upp upr ups upu ur- urb urc urd ure uri urp urr urs uru usb usc usd use usi usp usr uss usu uuc uue uur uus uuu