-er -ic bbb bbc bbe bbg bbi bbn bbo bbr bbs bbt bcb bcc bce bcg bci bcn bco bcr bcs bct be- beb bec bee beg bei ben beo ber bes bet bgb bgc bge bgg bgi bgn bgo bgr bgs bgt bi- bib bic bie big bii bin bio bir bis bit bnb bnc bne bng bni bnn bno bnr bns bnt bob boc boe bog boi bon boo bor bos bot brb bre brg bri brn bro brr brs brt bsb bsc bse bsg bsi bsn bso bsr bss bst btb btc bte btg bti btn bto btr bts btt c-- cbb cbc cbe cbg cbi cbn cbo cbr cbs cbt ccb ccc cce ccg cci ccn cco ccr ccs cct ce- ceb cec cee ceg cei cen ceo cer ces cet cgb cgc cge cgg cgi cgn cgo cgr cgs cgt ci- cib cic cie cig cii cin cio cir cis cit cn- cnb cnc cne cng cni cnn cno cnr cns cnt co- cob coc coe cog coi con coo cor cos cot crb crc cre crg cri crn cro crr crs crt csb csc cse csg csi csn cso csr css cst ctb ctc cte ctg cti ctn cto ctr cts ctt ebb ebc ebe ebg ebi ebn ebo ebr ebs ebt ec- ecb ecc ece ecg eci ecn eco ecr ecs ect eeb eec eee eeg een eeo eer ees eet egb egc ege egg egi egn ego egr egs egt eib eic eie eig eii ein eio eir eis eit en- enb enc ene eng eni enn eno enr ens ent eo- eob eoc eoe eog eoi eon eoo eor eos eot erb erc ere erg eri ern ero err ers ert es- esb esc ese esg esi esn eso esr ess est etb etc ete etg eti etn eto etr ets ett gbc gbe gbg gbi gbn gbo gbr gbs gbt gcb gcc gce gcg gci gcn gco gcr gcs gct ge- geb gec gee geg gei gen geo ger ges get ggb ggc ggg ggi ggn ggo ggr ggs ggt gib gic gie gig gii gin gio gir gis git gnb gnc gne gni gnn gno gnr gns gnt gob goc goe gog goi gon goo gor gos got grb grc gre grg gri grn gro grr grs grt gsb gsc gse gsg gsi gsn gso gsr gss gst gtb gtc gte gtg gti gtn gto gtr gts gtt ibb ibc ibe ibg ibi ibn ibo ibr ibs ibt icb icc ice icg ici icn ico icr ics ict ie- iec iee ieg iei ien ier ies iet igb igc ige igg igi ign igo igr igs igt iib iic iie iii iin iio iir iis iit in- inb inc ine ing ini inn ino inr ins int io- iob ioc ioe iog ioi ion ioo ior ios iot ir- irb irc ire irg iri irn iro irr irs irt is- isb isc ise isg isi isn iso isr iss ist itb itc ite itg iti itn ito its itt n-i nbb nbc nbe nbg nbi nbn nbo nbr nbs nbt ncb ncc nce ncg nci ncn nco ncr ncs nct ne- neb nec nee neg nei nen neo ner nes net ngb ngc nge ngg ngi ngn ngo ngs ngt nib nic nie nig nii nin nio nir nis nit nnb nnc nne nng nni nnn nno nns nnt no- nob noc noe nog noi non noo nor nos not nrb nrc nre nrg nri nrn nro nrr nrs nrt nsb nsc nse nsg nsi nsn nso nsr nss nst ntb ntc nte ntg nti ntn nto ntr nts ntt o-i ob- obb obc obe obg obi obn obo obr obs obt oc- ocb occ ocg oci ocn oco ocr ocs oct oeb oec oee oeg oei oen oeo oer oes oet ogc oge ogg ogi ogn ogo ogs ogt oib oic oie oii oin oio oir ois oit on- onb onc one ong oni onn ono onr ons ont oo- oob ooc oog ooi oon ooo oor oos oot or- orb orc ore org ori orn oro orr ors ort os- osb osc ose osg osi osn oso osr oss ost ot- otb otc ote otg oti otn oto otr ots ott rbb rbc rbe rbg rbi rbn rbo rbr rbs rbt rcb rcc rce rcg rci rcn rco rcr rcs rct re- reb rec ree reg rei ren reo rer res ret rgb rgc rge rgg rgi rgn rgo rgr rgs rgt rib ric rie rig rii rin rio rir ris rit rnb rnc rng rni rnn rno rnr rns rnt rob roc roe rog roi ron roo ror ros rot rrb rrc rrg rri rrn rrr rrs rrt rsb rsc rse rsg rsi rsn rso rsr rss rst rtb rtc rte rtg rti rtn rto rtr rts rtt sbb sbc sbe sbg sbi sbn sbo sbr sbs sbt scb scc sce scg sci scn sco scr scs sct se- seb sec see seg sei sen seo ser ses set sgb sgc sge sgg sgi sgn sgo sgr sgs sgt sib sic sie sig sii sin sio sir sis sit snb snc sne sng sni snn sno snr sns snt sob soc soe sog soi son soo sor sos sot sr- srb src sre srg sri srn sro srr srs srt ss- ssb ssc sse ssg ssi ssn sso ssr sss sst stb stc ste stg sti stn sto str sts stt tbb tbc tbe tbg tbi tbn tbo tbr tbs tbt tcb tcc tce tcg tci tcn tco tcr tcs tct te- teb tec tee teg tei ten teo ter tes tet tgb tgc tge tgg tgi tgn tgo tgr tgs tgt tib tic tie tig tii tin tio tir tis tit tnb tnc tne tng tni tnn tno tnr tns tnt to- tob toc toe tog toi ton too tor tos tot trb trc tre trg tri trn tro trr trs trt tsb tsc tse