bbb bbd bbe bbk bbn bbo bbt bdb bdd bde bdk bdo bdt be- beb bed bee bek ben beo bet bkb bke bkk bkn bko bkt bnb bnd bne bnk bnn bno bnt bob bod boe bok bon boo bot btb btd bte btk btn bto btt dbb dbd dbe dbk dbn dbo dbt ddb ddd dde ddk ddn ddo ddt de- deb ded dee dek den deo det dkb dke dkk dko dkt dnb dnd dne dnk dnn dno dnt dob dod doe dok don doo dot dtb dtd dte dtk dtn dto dtt ebb ebd ebe ebk ebn ebo ebt ed- edb edd ede edk edn edo edt eeb eed eee eek een eeo eet ekb ekd eke eko ekt en- enb end ene enk enn eno ent eo- eob eod eoe eok eon eoo eot etb etd ete etk etn eto ett k-t kbb kbd kbe kbk kbn kbo kdb kde kdk kdo kdt ke- keb ked kee kek ken keo ket kkb kke kkk kkn kkt kn- knd kne knk knn kno knt kob kod koe kok kon koo kot ktb kte ktk ktn kto ktt nbb nbd nbe nbk nbn nbo nbt ndb ndd nde ndk ndn ndo ndt ne- neb ned nee nek nen neo net nke nkk nkn nko nkt nnb nne nnk nnn nno nnt no- nob nod noe nok non noo not ntb ntd nte ntk ntn nto ntt ob- obb obd obe obk obn obo obt odb odd ode odn odo odt oeb oed oee oen oeo oet okb okd oke okk oko on- onb ond one onk onn ono ont oo- oob ood ook oon ooo oot ot- otb otd ote otk otn oto ott tbb tbd tbe tbk tbn tbo tbt tdb tdd tde tdk tdn tdo tdt te- teb ted tee tek ten teo tet tkb tke tkk tko tkt tnb tnd tne tnk tnn tno tnt to- tob tod toe tok ton too tot ttb ttd tte ttk ttn tto ttt