-er -ic b-p bbb bbc bbe bbi bbl bbp bbr bbt bcb bcc bce bci bcl bcp bcr bct be- beb bec bee bei bel bep ber bet bi- bib bic bie bii bil bip bir bit blb blc ble bli bll blp blr blt bpb bpc bpe bpi bpl bpp bpr bpt brb bre bri brl brp brr brt btb btc bte bti btl btp btr btt c-- cbb cbc cbe cbi cbl cbp cbr cbt ccb ccc cce cci ccl ccp ccr cct ce- ceb cec cee cei cel cep cer cet ci- cib cic cie cii cil cip cir cit cl- clb clc cle cli cll clp clr clt cpb cpc cpe cpi cpl cpp cpr cpt crb crc cre cri crl crp crr crt ctb ctc cte cti ctl ctp ctr ctt ebb ebc ebe ebi ebl ebp ebr ebt ec- ecb ecc ece eci ecl ecr ect eeb eec eee eel eep eer eet eib eic eie eii eil eip eir eit elb elc ele eli ell elp elr elt ep- epb epc epe epi epl epp epr ept erb erc ere eri erl erp err ert etb etc ete eti etl etp etr ett ibb ibc ibe ibi ibl ibp ibr ibt icb icc ice ici icl icp icr ict ie- iec iee iei iel iep ier iet iib iic iie iii iil iip iir iit il- ilb ilc ile ili ill ilp ilr ilt ipb ipc ipe ipi ipl ipp ipr ipt ir- irb irc ire iri irl irp irr irt itb itc ite iti itl itp itt l-p lbb lbc lbe lbi lbl lbp lbr lbt lcb lcc lce lci lcl lcp lcr lct leb lec lee lei lel lep ler let lib lic lie lii lil lip lir lit llb llc lle lli lll llp llr llt lpb lpc lpe lpi lpl lpp lpr lpt lrb lrc lri lrp lrr lrt ltb ltc lte lti ltl ltp ltr ltt p-p pbb pbc pbe pbi pbl pbp pbr pbt pcb pcc pce pci pcl pcp pcr pct peb pec pee pei pel pep per pet pib pic pie pii pil pip pir pit plb plc ple pli pll plp plr plt ppb ppc ppe ppi ppl ppp ppr ppt prb prc pre pri prl prp prr prt pt- ptb ptc pte pti ptl ptp ptr ptt rbb rbc rbe rbi rbl rbp rbr rbt rcb rcc rce rci rcl rcp rcr rct re- reb rec ree rei rel rep rer ret rib ric rie rii ril rip rir rit rlc rle rli rll rlp rlr rlt rpb rpc rpe rpi rpl rpp rpr rpt rrb rrc rri rrl rrp rrr rrt rtb rtc rte rti rtl rtp rtr rtt tbb tbc tbe tbi tbl tbp tbr tbt tcb tcc tce tci tcl tcp tcr tct te- teb tec tee tei tel tep ter tet tib tic tie tii til tip tir tit tlc tle tli tll tlp tlr tlt tpb tpc tpe tpi tpl tpp tpr tpt trb trc tre tri trl trp trr trt ttb ttc tte tti ttl ttp ttr ttt