-er bbb bbe bbn bbo bbr be- beb bee ben beo ber bjj bjn bjr bnb bne bnj bnn bno bnr bob boe boj bon boo bor brb bre brj brn bro brr ebb ebe ebj ebn ebo ebr eeb eee een eeo eer ejo en- enb ene enn eno enr eo- eob eoe eon eoo eor erb ere ern ero err jbj jbo jbr jeb jee jej jen jeo jer jjb jjj jjr jne jnj jnn jno jnr job joe joj jon joo jor jrb jrn jro jrr nbb nbe nbn nbo nbr ne- neb nee nej nen neo ner nje njn nnb nne nnn nno no- nob noe noj non noo nor nrb nre nrj nrn nro nrr ob- obb obe obj obn obo obr oeb oee oen oeo oer ojb oje ojo on- onb one onj onn ono onr oo- oob oon ooo oor or- orb ore orn oro orr rbb rbe rbn rbo rbr re- reb ree ren reo rer rjr rnb rnn rno rnr rob roe roj ron roo ror rrb rrn rrr