-er -ic b-p bbb bbc bbe bbg bbi bbn bbo bbp bbr bbs bcb bcc bce bcg bci bcn bco bcp bcr bcs be- beb bec bee beg bei ben beo bep ber bes bgb bgc bge bgg bgi bgn bgo bgp bgr bgs bi- bib bic bie big bii bin bio bip bir bis bnb bnc bne bng bni bnn bno bnp bnr bns bob boc boe bog boi bon boo bop bor bos bpb bpc bpe bpg bpi bpn bpo bpp bpr bps brb bre brg bri brn bro brp brr brs bsb bsc bse bsg bsi bsn bso bsp bsr bss c-- cbb cbc cbe cbg cbi cbn cbo cbp cbr cbs ccb ccc cce ccg cci ccn cco ccp ccr ccs ce- ceb cec cee ceg cei cen ceo cep cer ces cgb cgc cge cgg cgi cgn cgo cgp cgr cgs ci- cib cic cie cig cii cin cio cip cir cis cn- cnb cnc cne cng cni cnn cno cnp cnr cns co- cob coc coe cog coi con coo cop cor cos cpb cpc cpe cpg cpi cpn cpo cpp cpr cps crb crc cre crg cri crn cro crp crr crs csb csc cse csg csi csn cso csp csr css ebb ebc ebe ebg ebi ebn ebo ebp ebr ebs ec- ecb ecc ece ecg eci ecn eco ecr ecs eeb eec eee eeg een eeo eep eer ees egb egc ege egg egi egn ego egp egr egs eib eic eie eig eii ein eio eip eir eis en- enb enc ene eng eni enn eno enp enr ens eo- eob eoc eoe eog eoi eon eoo eop eor eos ep- epb epc epe epg epi epn epo epp epr eps erb erc ere erg eri ern ero erp err ers es- esb esc ese esg esi esn eso esp esr ess g-p gbc gbe gbg gbi gbn gbo gbp gbr gbs gcb gcc gce gcg gci gcn gco gcp gcr gcs ge- geb gec gee geg gei gen geo gep ger ges ggb ggc ggg ggi ggn ggo ggp ggr ggs gib gic gie gig gii gin gio gip gir gis gnb gnc gne gni gnn gno gnp gnr gns gob goc goe gog goi gon goo gop gor gos gpb gpc gpe gpg gpi gpn gpo gpp gpr gps grb grc gre grg gri grn gro grp grr grs gsb gsc gse gsg gsi gsn gso gsp gsr gss ibb ibc ibe ibg ibi ibn ibo ibp ibr ibs icb icc ice icg ici icn ico icp icr ics ie- iec iee ieg iei ien iep ier ies igb igc ige igg igi ign igo igp igr igs iib iic iie iii iin iio iip iir iis in- inb inc ine ing ini inn ino inp inr ins io- iob ioc ioe iog ioi ion ioo iop ior ios ipb ipc ipe ipg ipi ipn ipo ipp ipr ips ir- irb irc ire irg iri irn iro irp irr irs is- isb isc ise isg isi isn iso isp isr iss n-i nbb nbc nbe nbg nbi nbn nbo nbp nbr nbs ncb ncc nce ncg nci ncn nco ncp ncr ncs ne- neb nec nee neg nei nen neo nep ner nes ngb ngc nge ngg ngi ngn ngo ngp ngs nib nic nie nig nii nin nio nip nir nis nnb nnc nne nng nni nnn nno nnp nns no- nob noc noe nog noi non noo nop nor nos npb npc npe npg npi npn npo npp npr nps nrb nrc nre nrg nri nrn nro nrp nrr nrs nsb nsc nse nsg nsi nsn nso nsp nsr nss o-i ob- obb obc obe obg obi obn obo obp obr obs oc- ocb occ ocg oci ocn oco ocp ocr ocs oeb oec oee oeg oei oen oeo oep oer oes ogc oge ogg ogi ogn ogo ogp ogs oib oic oie oii oin oio oip oir ois on- onb onc one ong oni onn ono onp onr ons oo- oob ooc oog ooi oon ooo oop oor oos op- opb opc ope opg opi opn opo opp opr ops or- orb orc ore org ori orn oro orp orr ors os- osb osc ose osg osi osn oso osp osr oss p-p pbb pbc pbe pbg pbi pbn pbo pbp pbr pbs pcb pcc pce pcg pci pcn pco pcp pcr pcs peb pec pee peg pei pen peo pep per pes pgb pgc pge pgg pgi pgn pgo pgp pgr pgs pib pic pie pig pii pin pio pip pir pis pn- pnb pnc pne png pni pnn pno pnp pnr pns pob poc poe pog poi pon poo pop por pos ppb ppc ppe ppg ppi ppn ppo ppp ppr pps prb prc pre prg pri prn pro prp prr prs ps- psb psc pse psg psi psn pso psp psr pss rbb rbc rbe rbg rbi rbn rbo rbp rbr rbs rcb rcc rce rcg rci rcn rco rcp rcr rcs re- reb rec ree reg rei ren reo rep rer res rgb rgc rge rgg rgi rgn rgo rgp rgr rgs rib ric rie rig rii rin rio rip rir ris rnb rnc rng rni rnn rno rnp rnr rns rob roc roe rog roi ron roo rop ror ros rpb rpc rpe rpg rpi rpn rpo rpp rpr rps rrb rrc rrg rri rrn rrp rrr rrs rsb rsc rse rsg rsi rsn rso rsp rsr rss sbb sbc sbe sbg sbi sbn sbo sbp sbr sbs scb scc sce scg sci scn sco scp scr scs se- seb sec see seg sei sen seo sep ser ses sgb sgc sge sgg sgi sgn sgo sgp sgr sgs sib sic sie sig sii sin sio sip sir sis snb snc sne sng sni snn sno snp snr sns sob soc soe sog soi son soo sop sor sos spb spc spe spg spi spn spo spp spr sps sr-