-er -ic -th bbb bbc bbe bbg bbh bbi bbn bbr bbt bcb bcc bce bcg bch bci bcn bcr bct be- beb bec bee beg beh bei ben ber bet bgb bgc bge bgg bgh bgi bgn bgr bgt bhb bhc bhe bhg bhh bhi bhr bht bi- bib bic bie big bih bii bin bir bit bnb bnc bne bng bni bnn bnr bnt brb bre brg brh bri brn brr brt btb btc bte btg bth bti btn btr btt c-- cbb cbc cbe cbg cbh cbi cbn cbr cbt ccb ccc cce ccg cch cci ccn ccr cct ce- ceb cec cee ceg ceh cei cen cer cet cgb cgc cge cgg cgh cgi cgn cgr cgt ch- chb chc che chg chh chi chn chr cht ci- cib cic cie cig cih cii cin cir cit cn- cnb cnc cne cng cnh cni cnn cnr cnt crb crc cre crg crh cri crn crr crt ctb ctc cte ctg cth cti ctn ctr ctt ebb ebc ebe ebg ebh ebi ebn ebr ebt ec- ecb ecc ece ecg ech eci ecn ecr ect eeb eec eee eeg een eer eet egb egc ege egg egh egi egn egr egt ehb ehc ehe ehg ehh ehi ehn ehr eht eib eic eie eig eii ein eir eit en- enb enc ene eng enh eni enn enr ent erb erc ere erg erh eri ern err ert etb etc ete etg eth eti etn etr ett gbc gbe gbg gbh gbi gbn gbr gbt gcb gcc gce gcg gch gci gcn gcr gct ge- geb gec gee geg geh gei gen ger get ggb ggc ggg ggh ggi ggn ggr ggt ghb ghc ghe ghg ghh ghi ghn ghr ght gib gic gie gig gih gii gin gir git gnb gnc gne gni gnn gnr gnt grb grc gre grg grh gri grn grr grt gtb gtc gte gtg gth gti gtn gtr gtt h-i hbb hbc hbe hbg hbh hbi hbn hbr hbt hcb hcc hce hcg hch hci hcn hcr hct he- heb hec hee heg heh hei hen her het hgb hgc hge hgg hgh hgi hgn hgr hgt hhb hhc hhe hhg hhh hhi hhn hhr hht hib hic hie hig hih hii hin hir hit hnb hnc hne hng hnh hnn hnt hr- hrb hrc hre hrg hrh hri hrn hrr hrt htb htc hte htg hth hti htn htr htt ibb ibc ibe ibg ibh ibi ibn ibr ibt icb icc ice icg ich ici icn icr ict ie- iec iee ieg iei ien ier iet igb igc ige igg igh igi ign igr igt ihb ihc ihe ihg ihh ihi ihn ihr iht iib iic iie iih iii iin iir iit in- inb inc ine ing inh ini inn inr int ir- irb irc ire irg iri irn irr irt itb itc ite itg ith iti itn itt n-i nbb nbc nbe nbg nbi nbn nbr nbt ncb ncc nce ncg nch nci ncn ncr nct ne- neb nec nee neg neh nei nen ner net ngb ngc nge ngg ngh ngi ngn ngt nhb nhc nhe nhg nhh nhi nhn nhr nht nib nic nie nig nih nii nin nir nit nnb nnc nne nng nnh nni nnn nnt nrb nrc nre nrg nri nrn nrr nrt ntb ntc nte ntg nth nti ntn ntr ntt rbb rbc rbe rbg rbh rbi rbn rbr rbt rcb rcc rce rcg rch rci rcn rcr rct re- reb rec ree reg reh rei ren rer ret rgb rgc rge rgg rgh rgi rgn rgr rgt rh- rhb rhc rhe rhg rhh rhi rhn rhr rht rib ric rie rig rih rii rin rir rit rnb rnc rng rnh rni rnn rnr rnt rrb rrc rrg rrh rri rrn rrr rrt rtb rtc rte rtg rti rtn rtr rtt tbb tbc tbe tbg tbh tbi tbn tbr tbt tcb tcc tce tcg tch tci tcn tcr tct te- teb tec tee teg teh tei ten ter tet tgb tgc tge tgg tgh tgi tgn tgr tgt th- thb thc the thg thh thi thn thr tht tib tic tie tig tih tii tin tir tit tnb tnc tne tng tnh tni tnn tnr tnt trb trc tre trg trh tri trn trr trt ttb ttc tte ttg tth tti ttn ttr ttt