-er -th bbb bbc bbd bbe bbh bbk bbn bbo bbr bbt bcb bcc bcd bce bch bck bcn bco bcr bct bdb bdc bdd bde bdh bdk bdo bdr bdt be- beb bec bed bee beh bek ben beo ber bet bhb bhc bhd bhe bhh bhk bho bhr bht bkb bkc bke bkk bkn bko bkr bkt bnb bnc bnd bne bnk bnn bno bnr bnt bob boc bod boe boh bok bon boo bor bot brb brd bre brh brk brn bro brr brt btb btc btd bte bth btk btn bto btr btt c-- cbb cbc cbd cbe cbh cbk cbn cbo cbr cbt ccb ccc ccd cce cch cck ccn cco ccr cct cdb cdc cdd cde cdh cdk cdn cdo cdr cdt ce- ceb cec ced cee ceh cek cen ceo cer cet ch- chb chc chd che chh chk chn cho chr cht ckb ckc ckd ckh cko ckt cn- cnb cnc cnd cne cnh cnn cno cnr cnt co- cob coc cod coe coh cok con coo cor cot crb crc crd cre crh crk crn cro crr crt ctb ctc ctd cte cth ctk ctn cto ctr ctt dbb dbc dbd dbe dbh dbk dbn dbo dbr dbt dcb dcc dcd dce dck dcn dco dcr dct ddb ddc ddd dde ddh ddk ddn ddo ddr ddt de- deb dec ded dee deh dek den deo der det dh- dhb dhc dhd dhe dhh dhk dho dhr dht dkb dkc dke dkk dko dkr dkt dnb dnc dnd dne dnh dnk dnn dno dnr dnt dob doc dod doe doh dok don doo dor dot drb drc drd dre drk drn dro drr drt dtb dtc dtd dte dth dtk dtn dto dtr dtt ebb ebc ebd ebe ebh ebk ebn ebo ebr ebt ec- ecb ecc ecd ece ech eck ecn eco ecr ect ed- edb edc edd ede edh edk edn edo edr edt eeb eec eed eee eek een eeo eer eet ehb ehc ehd ehe ehh ehn eho ehr eht ekb ekc ekd eke ekh eko ekr ekt en- enb enc end ene enh enk enn eno enr ent eo- eob eoc eod eoe eoh eok eon eoo eor eot erb erc erd ere erh erk ern ero err ert etb etc etd ete eth etk etn eto etr ett hbb hbc hbd hbe hbh hbk hbn hbo hbr hbt hcb hcc hcd hce hch hck hcn hco hcr hct hdb hdc hdd hde hdh hdk hdn hdo hdr hdt he- heb hec hed hee heh hek hen heo her het hhb hhc hhd hhe hhh hhk hhn hho hhr hht hkb hkd hkh hkk hkn hko hkr hkt hnb hnc hnd hne hnh hnk hnn hno hnt hob hoc hod hoe hoh hok hon hoo hor hot hr- hrb hrc hrd hre hrh hrk hrn hro hrr hrt htb htc htd hte hth htk htn hto htr htt k-t kbb kbc kbd kbe kbh kbk kbn kbo kbr kcb kcc kcd kce kch kck kcn kcr kct kdb kdc kde kdh kdk kdo kdr kdt ke- keb kec ked kee keh kek ken keo ker ket khe khh khk khn kho khr kkb kkc kke kkh kkk kkn kkr kkt kn- knc knd kne knk knn kno knr knt kob koc kod koe koh kok kon koo kor kot krc krd krk krn kro krr krt ktb ktc kte kth ktk ktn kto ktr ktt nbb nbc nbd nbe nbk nbn nbo nbr nbt ncb ncc ncd nce nch nck ncn nco ncr nct ndb ndc ndd nde ndh ndk ndn ndo ndr ndt ne- neb nec ned nee neh nek nen neo ner net nhb nhc nhd nhe nhh nhk nhn nhr nht nkc nke nkk nkn nko nkr nkt nnb nnc nne nnh nnk nnn nno nnt no- nob noc nod noe noh nok non noo nor not nrb nrc nrd nre nrk nrn nro nrr nrt ntb ntc ntd nte nth ntk ntn nto ntr ntt ob- obb obc obd obe obh obk obn obo obr obt oc- ocb occ ocd och ock ocn oco ocr oct odb odc odd ode odh odn odo odr odt oeb oec oed oee oeh oen oeo oer oet ohc ohd ohe ohh ohn oho ohr oht okb okc okd oke okk oko okr on- onb onc ond one onh onk onn ono onr ont oo- oob ooc ood ooh ook oon ooo oor oot or- orb orc ord ore orh ork orn oro orr ort ot- otb otc otd ote oth otk otn oto otr ott rbb rbc rbd rbe rbh rbk rbn rbo rbr rbt rcb rcc rcd rce rch rcn rco rcr rct rdb rdc rdd rde rdh rdn rdo rdr rdt re- reb rec red ree reh rek ren reo rer ret rh- rhb rhc rhd rhe rhh rhn rho rhr rht rkb rkc rke rkk rko rkt rnb rnc rnd rnh rnn rno rnr rnt rob roc rod roe roh rok ron roo ror rot rrb rrc rrd rrh rrk rrn rrr rrt rtb rtc rtd rte rtk rtn rto rtr rtt tbb tbc tbd tbe tbh tbk tbn tbo tbr tbt tcb tcc tcd tce tch tck tcn tco tcr tct tdb tdc tdd tde tdh tdk tdn tdo tdr tdt te- teb tec ted tee teh tek ten teo ter tet th- thb thc thd the thh thk thn tho thr tht tkb tkc tke tkk tko tkr tkt tnb tnc tnd tne tnh tnk tnn tno tnr tnt to- tob toc tod toe toh tok ton too tor tot trb trc trd tre trh trk trn tro trr trt ttb ttc ttd tte tth ttk ttn tto ttr ttt