-er bbb bbe bbh bbi bbk bbn bbo bbr be- beb bee beh bei bek ben beo ber bhb bhe bhh bhi bhk bho bhr bi- bib bie bih bii bik bin bio bir bkb bke bkk bkn bko bkr bnb bne bni bnk bnn bno bnr bob boe boh boi bok bon boo bor brb bre brh bri brk brn bro brr ebb ebe ebh ebi ebk ebn ebo ebr eeb eee eek een eeo eer ehb ehe ehh ehi ehn eho ehr eib eie eii eik ein eio eir ekb eke ekh eki eko ekr en- enb ene enh eni enk enn eno enr eo- eob eoe eoh eoi eok eon eoo eor erb ere erh eri erk ern ero err h-i hbb hbe hbh hbi hbk hbn hbo hbr he- heb hee heh hei hek hen heo her hhb hhe hhh hhi hhk hhn hho hhr hib hie hih hii hik hin hio hir hkb hkh hki hkk hkn hko hkr hnb hne hnh hnk hnn hno hob hoe hoh hoi hok hon hoo hor hr- hrb hre hrh hri hrk hrn hro hrr ibb ibe ibh ibi ibk ibn ibo ibr ie- iee iei iek ien ier ihb ihe ihh ihi ihk ihn iho ihr iib iie iih iii iin iio iir ikb ike iki ikk iko ikr in- inb ine inh ini ink inn ino inr io- iob ioe ioh ioi ion ioo ior ir- irb ire iri irk irn iro irr kbb kbe kbh kbi kbk kbn kbo kbr ke- keb kee keh kei kek ken keo ker khe khh khi khk khn kho khr kib kie kih kii kik kin kio kir kkb kke kkh kki kkk kkn kkr kn- kne kni knk knn kno knr kob koe koh koi kok kon koo kor kri krk krn kro krr n-i nbb nbe nbi nbk nbn nbo nbr ne- neb nee neh nei nek nen neo ner nhb nhe nhh nhi nhk nhn nhr nib nie nih nii nik nin nio nir nke nki nkk nkn nko nkr nnb nne nnh nni nnk nnn nno no- nob noe noh noi nok non noo nor nrb nre nri nrk nrn nro nrr o-i ob- obb obe obh obi obk obn obo obr oeb oee oeh oei oen oeo oer ohe ohh ohi ohn oho ohr oib oie oii oik oin oio oir okb oke oki okk oko okr on- onb one onh oni onk onn ono onr oo- oob ooh ooi ook oon ooo oor or- orb ore orh ori ork orn oro orr rbb rbe rbh rbi rbk rbn rbo rbr re- reb ree reh rei rek ren reo rer rh- rhb rhe rhh rhi rhn rho rhr rib rie rih rii rik rin rio rir rkb rke rkk rko rnb rnh rni rnn rno rnr rob roe roh roi rok ron roo ror rrb rrh rri rrk rrn rrr