-er bbb bbe bbn bbo bbr bbw be- beb bee ben beo ber bew bnb bne bnn bno bnr bnw bob boe bon boo bor bow brb bre brn bro brr brw bwb bwo bwr ebb ebe ebn ebo ebr ebw eeb eee een eeo eer eew en- enb ene enn eno enr enw eo- eob eoe eon eoo eor eow erb ere ern ero err erw ewb ewe ewo ewr eww nbb nbe nbn nbo nbr nbw ne- neb nee nen neo ner new nnb nne nnn nno nnw no- nob noe non noo nor now nrb nre nrn nro nrr nrw nwb nwe nwn nwo nwr ob- obb obe obn obo obr obw oeb oee oen oeo oer on- onb one onn ono onr oo- oob oon ooo oor oow or- orb ore orn oro orr owb owe own owo oww rbb rbe rbn rbo rbr rbw re- reb ree ren reo rer rew rnb rnn rno rnr rnw rob roe ron roo ror row rrb rrn rrr rwb rwe rwr wbb wbe wbn wbo wbr wbw web wee wen weo wer wew wn- wne wnn wno wnw wob woe won woo wor wow wr- wre wrn wro wrr wrw wwe wwn wwo www