-er -ic b-p bbb bbc bbe bbf bbi bbl bbp bbr bbs bbt bcb bcc bce bcf bci bcl bcp bcr bcs bct be- beb bec bee bef bei bel bep ber bes bet bfb bfc bfe bff bfi bfl bfp bfr bfs bft bi- bib bic bie bif bii bil bip bir bis bit blb blc ble blf bli bll blp blr bls blt bpb bpc bpe bpf bpi bpl bpp bpr bps bpt brb bre brf bri brl brp brr brs brt bsb bsc bse bsf bsi bsl bsp bsr bss bst btb btc bte btf bti btl btp btr bts btt c-- cbb cbc cbe cbf cbi cbl cbp cbr cbs cbt ccb ccc cce ccf cci ccl ccp ccr ccs cct ce- ceb cec cee cef cei cel cep cer ces cet cfb cfc cfe cff cfi cfl cfp cfr cfs cft ci- cib cic cie cif cii cil cip cir cis cit cl- clb clc cle clf cli cll clp clr cls clt cpb cpc cpe cpf cpi cpl cpp cpr cps cpt crb crc cre crf cri crl crp crr crs crt csb csc cse csf csi csl csp csr css cst ctb ctc cte ctf cti ctl ctp ctr cts ctt ebb ebc ebe ebf ebi ebl ebp ebr ebs ebt ec- ecb ecc ece ecf eci ecl ecr ecs ect eeb eec eee eef eel eep eer ees eet ef- efb efc efe eff efi efl efp efr efs eft eib eic eie eif eii eil eip eir eis eit elb elc ele elf eli ell elp elr els elt ep- epb epc epe epf epi epl epp epr eps ept erb erc ere erf eri erl erp err ers ert es- esb esc ese esf esi esl esp esr ess est etb etc ete etf eti etl etp etr ets ett fbb fbc fbe fbf fbi fbl fbp fbr fbs fbt fcb fcc fce fcf fci fcl fcp fcr fcs fct feb fec fee fef fei fel fep fer fes fet ffc ffe fff ffi ffl ffp ffr ffs fft fib fic fie fif fii fil fip fir fis fit flb flc fle flf fli fll flp flr fls flt fpb fpc fpe fpi fpl fpp fpr fps fpt frb frc fre frf fri frl frp frr frs frt fsb fsc fse fsf fsi fsl fsp fsr fss fst ftb ftc fte ftf fti ftl ftp ftr fts ftt i-f ibb ibc ibe ibf ibi ibl ibp ibr ibs ibt icb icc ice icf ici icl icp icr ics ict ie- iec iee ief iei iel iep ier ies iet ifb ifc ife iff ifi ifl ifp ifr ifs ift iib iic iie iif iii iil iip iir iis iit il- ilb ilc ile ilf ili ill ilp ilr ils ilt ipb ipc ipe ipf ipi ipl ipp ipr ips ipt ir- irb irc ire irf iri irl irp irr irs irt is- isb isc ise isf isi isl isp isr iss ist itb itc ite itf iti itl itp its itt l-p lbb lbc lbe lbf lbi lbl lbp lbr lbs lbt lcb lcc lce lcf lci lcl lcp lcr lcs lct leb lec lee lef lei lel lep ler les let lfb lfc lfe lff lfi lfl lfp lfr lfs lft lib lic lie lif lii lil lip lir lis lit llb llc lle llf lli lll llp llr lls llt lpb lpc lpe lpf lpi lpl lpp lpr lps lpt lrb lrc lrf lri lrp lrr lrs lrt lsb lsc lse lsf lsi lsl lsp lsr lss lst ltb ltc lte ltf lti ltl ltp ltr lts ltt p-p pbb pbc pbe pbf pbi pbl pbp pbr pbs pbt pcb pcc pce pcf pci pcl pcp pcr pcs pct peb pec pee pef pei pel pep per pes pet pfb pfc pfe pff pfi pfl pfp pfr pfs pft pib pic pie pif pii pil pip pir pis pit plb plc ple plf pli pll plp plr pls plt ppb ppc ppe ppf ppi ppl ppp ppr pps ppt prb prc pre prf pri prl prp prr prs prt ps- psb psc pse psf psi psl psp psr pss pst pt- ptb ptc pte ptf pti ptl ptp ptr pts ptt rbb rbc rbe rbf rbi rbl rbp rbr rbs rbt rcb rcc rce rcf rci rcl rcp rcr rcs rct re- reb rec ree ref rei rel rep rer res ret rfb rfc rfe rff rfi rfl rfp rfr rfs rft rib ric rie rif rii ril rip rir ris rit rlc rle rlf rli rll rlp rlr rls rlt rpb rpc rpe rpf rpi rpl rpp rpr rps rpt rrb rrc rrf rri rrl rrp rrr rrs rrt rsb rsc rse rsf rsi rsl rsp rsr rss rst rtb rtc rte rtf rti rtl rtp rtr rts rtt sbb sbc sbe sbf sbi sbl sbp sbr sbs sbt scb scc sce scf sci scl scp scr scs sct se- seb sec see sef sei sel sep ser ses set sfb sfc sfe sff sfi sfl sfp sfr sfs sft sib sic sie sif sii sil sip sir sis sit slb slc sle slf sli sll slp slr sls slt spb spc spe spf spi spl spp spr sps spt sr- srb src sre srf sri srl srp srr srs srt ss- ssb ssc sse ssf ssi ssl ssp ssr sss sst stb stc ste stf sti stl stp str sts stt tbb tbc tbe tbf tbi tbl tbp tbr tbs tbt tcb tcc tce tcf tci tcl tcp tcr tcs tct te- teb tec tee tef tei tel tep ter tes tet tfb tfc tfe tff tfi tfl tfp tfr tfs tft tib tic tie tif tii til tip tir tis tit tlc tle tlf tli tll tlp tlr tls tlt tpb tpc tpe tpf tpi tpl tpp tpr tps tpt trb trc tre trf tri trl trp trr trs trt tsb tsc tse tsf tsi