-er -ic b-u bbb bbc bbd bbe bbf bbh bbi bbl bbr bbu bcb bcc bcd bce bcf bch bci bcl bcr bcu bdb bdc bdd bde bdf bdh bdi bdl bdr bdu be- beb bec bed bee bef beh bei bel ber beu bfb bfc bfd bfe bff bfh bfi bfl bfr bfu bhb bhc bhd bhe bhf bhh bhi bhl bhr bhu bi- bib bic bid bie bif bih bii bil bir biu blb blc bld ble blf blh bli bll blr blu brb brd bre brf brh bri brl brr bru bub buc bud bue buf buh bui bul bur buu c-- cbb cbc cbd cbe cbf cbh cbi cbl cbr cbu ccb ccc ccd cce ccf cch cci ccl ccr ccu cdb cdc cdd cde cdf cdh cdi cdl cdr cdu ce- ceb cec ced cee cef ceh cei cel cer ceu cfb cfc cfd cfe cff cfh cfi cfl cfr cfu ch- chb chc chd che chf chh chi chl chr chu ci- cib cic cid cie cif cih cii cil cir ciu cl- clb clc cld cle clf clh cli cll clr clu crb crc crd cre crf crh cri crl crr cru cub cuc cud cue cuf cuh cui cul cur cuu dbb dbc dbd dbe dbf dbh dbi dbl dbr dbu dcb dcc dcd dce dcf dci dcl dcr dcu ddb ddc ddd dde ddf ddh ddi ddl ddr ddu de- deb dec ded dee def deh dei del der deu dfb dfc dfd dfe dff dfh dfi dfl dfr dfu dh- dhb dhc dhd dhe dhf dhh dhi dhl dhr dhu di- dib dic did die dif dih dii dil dir diu dl- dlb dlc dld dle dlf dlh dli dll dlr dlu drb drc drd dre dri drl drr dru dub duc dud due duf duh dui dul dur ebb ebc ebd ebe ebf ebh ebi ebl ebr ebu ec- ecb ecc ecd ece ecf ech eci ecl ecr ecu ed- edb edc edd ede edf edh edi edl edr edu eeb eec eed eee eef eel eer ef- efb efc efd efe eff efh efi efl efr ehb ehc ehd ehe ehf ehh ehi ehl ehr ehu eib eic eid eie eif eii eil eir eiu elb elc eld ele elf elh eli ell elr elu erb erc erd ere erf erh eri erl err eru eu- eub euc eud eue euf eui eul eur fbb fbc fbd fbe fbf fbh fbi fbl fbr fbu fcb fcc fcd fce fcf fci fcl fcr fcu fdb fdc fdd fde fdf fdh fdi fdl fdr fdu feb fec fed fee fef feh fei fel fer feu ffc ffd ffe fff ffh ffi ffl ffr ffu fhb fhc fhe fhf fhh fhi fhl fhr fib fic fid fie fif fih fii fil fir fiu flb flc fld fle flf fli fll flr flu frb frc frd fre frf frh fri frl frr fru fub fud fue fuf fui ful fur fuu h-i hbb hbc hbd hbe hbf hbh hbi hbl hbr hbu hcb hcc hcd hce hcf hch hci hcl hcr hdb hdc hdd hde hdf hdh hdi hdl hdr hdu he- heb hec hed hee hef heh hei hel her heu hfb hfc hfd hfe hff hfh hfi hfl hfr hfu hhb hhc hhd hhe hhf hhh hhi hhl hhr hhu hib hic hid hie hif hih hii hil hir hiu hlb hlc hld hle hlf hlh hli hll hlr hlu hr- hrb hrc hrd hre hrf hrh hri hrl hrr hru hub huc hud hue huf huh hui hul hur huu i-d i-f ibb ibc ibd ibe ibf ibh ibi ibl ibr ibu icb icc icd ice icf ich ici icl icr icu idb idc idd ide idf idh idi idl idr idu ie- iec ied iee ief iei iel ier ifb ifc ifd ife iff ifi ifl ifr ifu ihb ihc ihd ihe ihf ihh ihi ihl ihr ihu iib iic iid iie iif iih iii iil iir iiu il- ilb ilc ild ile ilf ilh ili ill ilr ilu ir- irb irc ird ire irf iri irl irr iru iu- iub iuc iud iue iui iur lbb lbc lbd lbe lbf lbh lbi lbl lbr lbu lcb lcc lcd lce lcf lch lci lcl lcr lcu ldb ldc ldd lde ldf ldh ldi ldl ldr ldu leb lec led lee lef leh lei lel ler leu lfb lfc lfd lfe lff lfh lfi lfl lfr lfu lhb lhc lhd lhf lhh lhi lhr lhu lib lic lid lie lif lih lii lil lir liu llb llc lld lle llf lli lll llr llu lrb lrc lrd lrf lrh lri lrr lru lub luc lud lue luf luh lui lul lur luu rbb rbc rbd rbe rbf rbh rbi rbl rbr rbu rcb rcc rcd rce rcf rch rci rcl rcr rcu rdb rdc rdd rde rdf rdh rdi rdl rdr rdu re- reb rec red ree ref reh rei rel rer reu rfb rfc rfd rfe rff rfh rfi rfl rfr rfu rh- rhb rhc rhd rhe rhf rhh rhi rhl rhr rhu rib ric rid rie rif rih rii ril rir rlc rld rle rlf rlh rli rll rlr rlu rrb rrc rrd rrf rrh rri rrl rrr rru rub ruc rud rue ruf ruh rui rur ruu ubb ubc ube ubf ubh ubi ubl ubr ubu ucb ucc ucd uce ucf uch uci ucl ucr ucu udb udc udd ude udf udi udl udr udu ueb uec ued uee uef ueh uei uel uer ufc ufd ufe uff ufh ufi ufl ufr ufu uhb uhc uhd uhe uhf uhh uhi uhl uhr uhu uib uic uid uie uif uii uil uir uiu ulb ulc uld ule ulf uli ull ulr ulu ur- urb urc urd ure urf uri url urr uru uuc uue uur uuu

bbbb bbch bbci bbdd bbeb bbfc bblb bbrc bcbc bccc bcci bccl bcde bcec bcer bcfc bchd bche bcie bcru bcuc