-er -ic b-p bbb bbc bbe bbi bbl bbm bbp bbr bbt bcb bcc bce bci bcl bcm bcp bcr bct be- beb bec bee bei bel bem bep ber bet bi- bib bic bie bii bil bim bip bir bit blb blc ble bli bll blm blp blr blt bmb bmc bme bmi bml bmm bmp bmr bmt bpb bpc bpe bpi bpl bpm bpp bpr bpt brb bre bri brl brm brp brr brt btb btc bte bti btl btm btp btr btt c-- cbb cbc cbe cbi cbl cbm cbp cbr cbt ccb ccc cce cci ccl ccm ccp ccr cct ce- ceb cec cee cei cel cem cep cer cet ci- cib cic cie cii cil cim cip cir cit cl- clb clc cle cli cll clm clp clr clt cmb cmc cme cmi cml cmm cmp cmr cmt cpb cpc cpe cpi cpl cpm cpp cpr cpt crb crc cre cri crl crm crp crr crt ctb ctc cte cti ctl ctm ctp ctr ctt ebb ebc ebe ebi ebl ebm ebp ebr ebt ec- ecb ecc ece eci ecl ecm ecr ect eeb eec eee eel eem eep eer eet eib eic eie eii eil eim eip eir eit elb elc ele eli ell elm elp elr elt em- emb emc eme emi eml emm emp emr emt ep- epb epc epe epi epl epm epp epr ept erb erc ere eri erl erm erp err ert etb etc ete eti etl etm etp etr ett ibb ibc ibe ibi ibl ibm ibp ibr ibt icb icc ice ici icl icm icp icr ict ie- iec iee iei iel iem iep ier iet iib iic iie iii iil iim iip iir iit il- ilb ilc ile ili ill ilm ilp ilr ilt im- imb imc ime imi iml imm imp imt ipb ipc ipe ipi ipl ipm ipp ipr ipt ir- irb irc ire iri irl irm irp irr irt itb itc ite iti itl itm itp itt l-p lbb lbc lbe lbi lbl lbm lbp lbr lbt lcb lcc lce lci lcl lcm lcp lcr lct leb lec lee lei lel lem lep ler let lib lic lie lii lil lim lip lir lit llb llc lle lli lll llm llp llr llt lmb lmc lme lmi lml lmm lmp lmr lmt lpb lpc lpe lpi lpl lpm lpp lpr lpt lrb lrc lri lrm lrp lrr lrt ltb ltc lte lti ltl ltm ltp ltr ltt m-r mbb mbc mbe mbi mbl mbm mbp mbr mbt mc- mcb mcc mce mci mcl mcm mcp mcr mct meb mec mee mei mel mem mep mer met mi- mib mic mie mii mil mim mip mir mit mlb mlc mle mli mll mlm mlp mlr mlt mmb mmc mme mmi mml mmm mmp mmr mmt mpb mpc mpe mpi mpl mpm mpp mpr mpt mrb mrc mre mri mrl mrm mrp mrr mrt mtb mtc mte mti mtl mtm mtp mtr mtt p-p pbb pbc pbe pbi pbl pbm pbp pbr pbt pcb pcc pce pci pcl pcm pcp pcr pct peb pec pee pei pel pem pep per pet pib pic pie pii pil pim pip pir pit plb plc ple pli pll plm plp plr plt pmb pmc pme pmi pml pmm pmp pmr pmt ppb ppc ppe ppi ppl ppm ppp ppr ppt prb prc pre pri prl prm prp prr prt pt- ptb ptc pte pti ptl ptm ptp ptr ptt rbb rbc rbe rbi rbl rbm rbp rbr rbt rcb rcc rce rci rcl rcm rcp rcr rct re- reb rec ree rei rel rem rep rer ret rib ric rie rii ril rim rip rir rit rlc rle rli rll rlm rlp rlr rlt rmb rmc rme rmi rml rmm rmp rmr rmt rpb rpc rpe rpi rpl rpm rpp rpr rpt rrb rrc rri rrl rrm rrp rrr rrt rtb rtc rte rti rtl rtm rtp rtr rtt tbb tbc tbe tbi tbl tbm tbp tbr tbt tcb tcc tce tci tcl tcm tcp tcr tct te- teb tec tee tei tel tem tep ter tet tib tic tie tii til tim tip tir tit tlc tle tli tll tlm tlp tlr tlt tmb tmc tme tmi tml tmm tmp tmr tmt tpb tpc tpe tpi tpl tpm tpp tpr tpt trb trc tre tri trl trm trp trr trt ttb ttc tte tti ttl ttm ttp ttr ttt