-er bbb bbd bbe bbg bbi bbk bbr bbt bdb bdd bde bdg bdi bdk bdr bdt be- beb bed bee beg bei bek ber bet bgb bgd bge bgg bgi bgk bgr bgt bi- bib bid bie big bii bik bir bit bkb bke bkg bkk bkr bkt brb brd bre brg bri brk brr brt btb btd bte btg bti btk btr btt dbb dbd dbe dbg dbi dbk dbr dbt ddb ddd dde ddg ddi ddk ddr ddt de- deb ded dee deg dei dek der det dgd dge dgg dgi dgk dgr dgt di- dib did die dig dii dik dir dit dkb dke dkg dki dkk dkr dkt drb drd dre drg dri drk drr drt dtb dtd dte dtg dti dtk dtr dtt ebb ebd ebe ebg ebi ebk ebr ebt ed- edb edd ede edg edi edk edr edt eeb eed eee eeg eek eer eet egb egd ege egg egi egr egt eib eid eie eig eii eik eir eit ekb ekd eke ekg eki ekr ekt erb erd ere erg eri erk err ert etb etd ete etg eti etk etr ett g-d gbd gbe gbg gbi gbk gbr gbt gdb gdd gde gdi gdk gdr gdt ge- geb ged gee geg gei gek ger get ggb ggd ggg ggi ggr ggt gib gid gie gig gii gik gir git gkb gkd gkt grb grd gre grg gri grk grr grt gtb gtd gte gtg gti gtk gtr gtt i-d ibb ibd ibe ibg ibi ibk ibr ibt idb idd ide idg idi idk idr idt ie- ied iee ieg iei iek ier iet igb igd ige igg igi igk igr igt iib iid iie iii iir iit ikb ike iki ikk ikr ikt ir- irb ird ire irg iri irk irr irt itb itd ite itg iti itk itt k-t kbb kbd kbe kbi kbk kbr kdb kde kdg kdk kdr kdt ke- keb ked kee keg kei kek ker ket kgb kgd kgi kib kid kie kig kii kik kir kit kkb kke kki kkk kkr kkt krd krg kri krk krr krt ktb kte ktg ktk ktr ktt rbb rbd rbe rbg rbi rbk rbr rbt rdb rdd rde rdg rdi rdr rdt re- reb red ree reg rei rek rer ret rgb rgd rge rgg rgi rgk rgr rgt rib rid rie rig rii rik rir rit rkb rke rkg rkk rkt rrb rrd rrg rri rrk rrr rrt rtb rtd rte rtg rti rtk rtr rtt tbb tbd tbe tbg tbi tbk tbr tbt tdb tdd tde tdg tdi tdk tdr tdt te- teb ted tee teg tei tek ter tet tgb tge tgg tgi tgk tgr tgt tib tid tie tig tii tik tir tit tkb tke tkg tkk tkr tkt trb trd tre trg tri trk trr trt ttb ttd tte ttg tti ttk ttr ttt