-th bbb bbc bbd bbe bbh bbo bbt bcb bcc bcd bce bch bco bct bdb bdc bdd bde bdh bdo bdt be- beb bec bed bee beh beo bet bhb bhc bhd bhe bhh bho bht bob boc bod boe boh boo bot btb btc btd bte bth bto btt c-- cbb cbc cbd cbe cbh cbo cbt ccb ccc ccd cce cch cco cct cdb cdc cdd cde cdh cdo cdt ce- ceb cec ced cee ceh ceo cet ch- chb chc chd che chh cho cht co- cob coc cod coe coh coo cot ctb ctc ctd cte cth cto ctt dbb dbc dbd dbe dbh dbo dbt dcb dcc dcd dce dco dct ddb ddc ddd dde ddh ddo ddt de- deb dec ded dee deh deo det dh- dhb dhc dhd dhe dhh dho dht dob doc dod doe doh doo dot dtb dtc dtd dte dth dto dtt ebb ebc ebd ebe ebh ebo ebt ec- ecb ecc ecd ece ech eco ect ed- edb edc edd ede edh edo edt eeb eec eed eee eeo eet ehb ehc ehd ehe ehh eho eht eo- eob eoc eod eoe eoh eoo eot etb etc etd ete eth eto ett hbb hbc hbd hbe hbh hbo hbt hcb hcc hcd hce hch hco hct hdb hdc hdd hde hdh hdo hdt he- heb hec hed hee heh heo het hhb hhc hhd hhe hhh hho hht hob hoc hod hoe hoh hoo hot htb htc htd hte hth hto htt ob- obb obc obd obe obh obo obt oc- ocb occ ocd och oco oct odb odc odd ode odh odo odt oeb oec oed oee oeh oeo oet ohc ohd ohe ohh oho oht oo- oob ooc ood ooh ooo oot ot- otb otc otd ote oth oto ott tbb tbc tbd tbe tbh tbo tbt tcb tcc tcd tce tch tco tct tdb tdc tdd tde tdh tdo tdt te- teb tec ted tee teh teo tet th- thb thc thd the thh tho tht to- tob toc tod toe toh too tot ttb ttc ttd tte tth tto ttt