-er -ic bbb bbc bbd bbe bbg bbi bbk bbr bbt bcb bcc bcd bce bcg bci bck bcr bct bdb bdc bdd bde bdg bdi bdk bdr bdt be- beb bec bed bee beg bei bek ber bet bgb bgc bgd bge bgg bgi bgk bgr bgt bi- bib bic bid bie big bii bik bir bit bkb bkc bke bkg bkk bkr bkt brb brd bre brg bri brk brr brt btb btc btd bte btg bti btk btr btt c-- cbb cbc cbd cbe cbg cbi cbk cbr cbt ccb ccc ccd cce ccg cci cck ccr cct cdb cdc cdd cde cdg cdi cdk cdr cdt ce- ceb cec ced cee ceg cei cek cer cet cgb cgc cgd cge cgg cgi cgr cgt ci- cib cic cid cie cig cii cik cir cit ckb ckc ckd cki ckt crb crc crd cre crg cri crk crr crt ctb ctc ctd cte ctg cti ctk ctr ctt dbb dbc dbd dbe dbg dbi dbk dbr dbt dcb dcc dcd dce dcg dci dck dcr dct ddb ddc ddd dde ddg ddi ddk ddr ddt de- deb dec ded dee deg dei dek der det dgc dgd dge dgg dgi dgk dgr dgt di- dib dic did die dig dii dik dir dit dkb dkc dke dkg dki dkk dkr dkt drb drc drd dre drg dri drk drr drt dtb dtc dtd dte dtg dti dtk dtr dtt ebb ebc ebd ebe ebg ebi ebk ebr ebt ec- ecb ecc ecd ece ecg eci eck ecr ect ed- edb edc edd ede edg edi edk edr edt eeb eec eed eee eeg eek eer eet egb egc egd ege egg egi egr egt eib eic eid eie eig eii eik eir eit ekb ekc ekd eke ekg eki ekr ekt erb erc erd ere erg eri erk err ert etb etc etd ete etg eti etk etr ett g-d gbc gbd gbe gbg gbi gbk gbr gbt gcb gcc gcd gce gcg gci gck gcr gct gdb gdc gdd gde gdi gdk gdr gdt ge- geb gec ged gee geg gei gek ger get ggb ggc ggd ggg ggi ggr ggt gib gic gid gie gig gii gik gir git gkb gkd gkt grb grc grd gre grg gri grk grr grt gtb gtc gtd gte gtg gti gtk gtr gtt i-d ibb ibc ibd ibe ibg ibi ibk ibr ibt icb icc icd ice icg ici ick icr ict idb idc idd ide idg idi idk idr idt ie- iec ied iee ieg iei iek ier iet igb igc igd ige igg igi igk igr igt iib iic iid iie iii iir iit ikb ikc ike iki ikk ikr ikt ir- irb irc ird ire irg iri irk irr irt itb itc itd ite itg iti itk itt k-t kbb kbc kbd kbe kbi kbk kbr kcb kcc kcd kce kcg kci kck kcr kct kdb kdc kde kdg kdk kdr kdt ke- keb kec ked kee keg kei kek ker ket kgb kgc kgd kgi kib kic kid kie kig kii kik kir kit kkb kkc kke kki kkk kkr kkt krc krd krg kri krk krr krt ktb ktc kte ktg ktk ktr ktt rbb rbc rbd rbe rbg rbi rbk rbr rbt rcb rcc rcd rce rcg rci rcr rct rdb rdc rdd rde rdg rdi rdr rdt re- reb rec red ree reg rei rek rer ret rgb rgc rgd rge rgg rgi rgk rgr rgt rib ric rid rie rig rii rik rir rit rkb rkc rke rkg rkk rkt rrb rrc rrd rrg rri rrk rrr rrt rtb rtc rtd rte rtg rti rtk rtr rtt tbb tbc tbd tbe tbg tbi tbk tbr tbt tcb tcc tcd tce tcg tci tck tcr tct tdb tdc tdd tde tdg tdi tdk tdr tdt te- teb tec ted tee teg tei tek ter tet tgb tgc tge tgg tgi tgk tgr tgt tib tic tid tie tig tii tik tir tit tkb tkc tke tkg tkk tkr tkt trb trc trd tre trg tri trk trr trt ttb ttc ttd tte ttg tti ttk ttr ttt