-er -ic b-p bbb bbc bbe bbg bbi bbm bbn bbp bbr bbs bcb bcc bce bcg bci bcm bcn bcp bcr bcs be- beb bec bee beg bei bem ben bep ber bes bgb bgc bge bgg bgi bgm bgn bgp bgr bgs bi- bib bic bie big bii bim bin bip bir bis bmb bmc bme bmg bmi bmm bmn bmp bmr bms bnb bnc bne bng bni bnn bnp bnr bns bpb bpc bpe bpg bpi bpm bpn bpp bpr bps brb bre brg bri brm brn brp brr brs bsb bsc bse bsg bsi bsm bsn bsp bsr bss c-- cbb cbc cbe cbg cbi cbm cbn cbp cbr cbs ccb ccc cce ccg cci ccm ccn ccp ccr ccs ce- ceb cec cee ceg cei cem cen cep cer ces cgb cgc cge cgg cgi cgm cgn cgp cgr cgs ci- cib cic cie cig cii cim cin cip cir cis cmb cmc cme cmg cmi cmm cmn cmp cmr cms cn- cnb cnc cne cng cni cnm cnn cnp cnr cns cpb cpc cpe cpg cpi cpm cpn cpp cpr cps crb crc cre crg cri crm crn crp crr crs csb csc cse csg csi csm csn csp csr css ebb ebc ebe ebg ebi ebm ebn ebp ebr ebs ec- ecb ecc ece ecg eci ecm ecn ecr ecs eeb eec eee eeg eem een eep eer ees egb egc ege egg egi egm egn egp egr egs eib eic eie eig eii eim ein eip eir eis em- emb emc eme emg emi emm emn emp emr ems en- enb enc ene eng eni enm enn enp enr ens ep- epb epc epe epg epi epm epn epp epr eps erb erc ere erg eri erm ern erp err ers es- esb esc ese esg esi esm esn esp esr ess g-p gbc gbe gbg gbi gbm gbn gbp gbr gbs gcb gcc gce gcg gci gcm gcn gcp gcr gcs ge- geb gec gee geg gei gem gen gep ger ges ggb ggc ggg ggi ggm ggn ggp ggr ggs gib gic gie gig gii gim gin gip gir gis gmb gmc gme gmg gmi gmm gmn gmp gmr gms gnb gnc gne gni gnm gnn gnp gnr gns gpb gpc gpe gpg gpi gpm gpn gpp gpr gps grb grc gre grg gri grm grn grp grr grs gsb gsc gse gsg gsi gsm gsn gsp gsr gss ibb ibc ibe ibg ibi ibm ibn ibp ibr ibs icb icc ice icg ici icm icn icp icr ics ie- iec iee ieg iei iem ien iep ier ies igb igc ige igg igi igm ign igp igr igs iib iic iie iii iim iin iip iir iis im- imb imc ime img imi imm imn imp ims in- inb inc ine ing ini inm inn inp inr ins ipb ipc ipe ipg ipi ipm ipn ipp ipr ips ir- irb irc ire irg iri irm irn irp irr irs is- isb isc ise isg isi ism isn isp isr iss m-r mbb mbc mbe mbg mbi mbm mbp mbr mbs mc- mcb mcc mce mcg mci mcm mcn mcp mcr mcs meb mec mee meg mei mem men mep mer mes mgb mgc mge mgi mgm mgn mgp mgr mgs mi- mib mic mie mig mii mim min mip mir mis mmb mmc mme mmg mmi mmm mmn mmp mmr mms mnb mnc mne mng mni mnm mnn mnp mnr mns mpb mpc mpe mpg mpi mpm mpn mpp mpr mps mrb mrc mre mrg mri mrm mrn mrp mrr mrs msb msc mse msg msi msm msn msp msr mss n-i nbb nbc nbe nbg nbi nbm nbn nbp nbr nbs ncb ncc nce ncg nci ncm ncn ncp ncr ncs ne- neb nec nee neg nei nem nen nep ner nes ngb ngc nge ngg ngi ngm ngn ngp ngs nib nic nie nig nii nim nin nip nir nis nmb nmc nme nmg nmi nmm nmn nmp nmr nms nnb nnc nne nng nni nnm nnn nnp nns npb npc npe npg npi npm npn npp npr nps nrb nrc nre nrg nri nrm nrn nrp nrr nrs nsb nsc nse nsg nsi nsm nsn nsp nsr nss p-p pbb pbc pbe pbg pbi pbm pbn pbp pbr pbs pcb pcc pce pcg pci pcm pcn pcp pcr pcs peb pec pee peg pei pem pen pep per pes pgb pgc pge pgg pgi pgm pgn pgp pgr pgs pib pic pie pig pii pim pin pip pir pis pmb pmc pme pmg pmi pmm pmn pmp pmr pms pn- pnb pnc pne png pni pnm pnn pnp pnr pns ppb ppc ppe ppg ppi ppm ppn ppp ppr pps prb prc pre prg pri prm prn prp prr prs ps- psb psc pse psg psi psm psn psp psr pss rbb rbc rbe rbg rbi rbm rbn rbp rbr rbs rcb rcc rce rcg rci rcm rcn rcp rcr rcs re- reb rec ree reg rei rem ren rep rer res rgb rgc rge rgg rgi rgn rgp rgr rgs rib ric rie rig rii rim rin rip rir ris rmb rmc rme rmg rmi rmm rmn rmp rmr rms rnb rnc rng rni rnm rnn rnp rnr rns rpb rpc rpe rpg rpi rpm rpn rpp rpr rps rrb rrc rrg rri rrm rrn rrp rrr rrs rsb rsc rse rsg rsi rsm rsn rsp rsr rss sbb sbc sbe sbg sbi sbm sbn sbp sbr sbs scb scc sce scg sci scm scn scp scr scs se- seb sec see seg sei sem sen sep ser ses sgb sgc sge sgg sgi sgm sgn sgp sgr sgs sib sic sie sig sii sim sin sip sir sis smb smc sme smg smi smm smn smp smr sms snb snc sne sng sni snm snn snp snr sns spb spc spe spg spi spm spn spp spr sps sr- srb src sre srg sri