-er bbb bbe bbg bbh bbn bbo bbr be- beb bee beg beh ben beo ber bgb bge bgg bgh bgn bgo bgr bhb bhe bhg bhh bho bhr bnb bne bng bnn bno bnr bob boe bog boh bon boo bor brb bre brg brh brn bro brr ebb ebe ebg ebh ebn ebo ebr eeb eee eeg een eeo eer egb ege egg egh egn ego egr ehb ehe ehg ehh ehn eho ehr en- enb ene eng enh enn eno enr eo- eob eoe eog eoh eon eoo eor erb ere erg erh ern ero err gbe gbg gbh gbn gbo gbr ge- geb gee geg geh gen geo ger ggb ggg ggh ggn ggo ggr ghb ghe ghg ghh ghn gho ghr gnb gne gnn gno gnr gob goe gog goh gon goo gor grb gre grg grh grn gro grr hbb hbe hbg hbh hbn hbo hbr he- heb hee heg heh hen heo her hgb hge hgg hgh hgn hgo hgr hhb hhe hhg hhh hhn hho hhr hnb hne hng hnh hnn hno hob hoe hog hoh hon hoo hor hr- hrb hre hrg hrh hrn hro hrr nbb nbe nbg nbn nbo nbr ne- neb nee neg neh nen neo ner ngb nge ngg ngh ngn ngo nhb nhe nhg nhh nhn nhr nnb nne nng nnh nnn nno no- nob noe nog noh non noo nor nrb nre nrg nrn nro nrr ob- obb obe obg obh obn obo obr oeb oee oeg oeh oen oeo oer oge ogg ogh ogn ogo ohe ohg ohh ohn oho ohr on- onb one ong onh onn ono onr oo- oob oog ooh oon ooo oor or- orb ore org orh orn oro orr rbb rbe rbg rbh rbn rbo rbr re- reb ree reg reh ren reo rer rgb rge rgg rgh rgn rgo rgr rh- rhb rhe rhg rhh rhn rho rhr rnb rng rnh rnn rno rnr rob roe rog roh ron roo ror rrb rrg rrh rrn rrr