bbb bbn bbo bbr bbs bjj bjn bjr bjs bnb bnj bnn bno bnr bns bob boj bon boo bor bos brb brj brn bro brr brs bsb bsj bsn bso bsr bss jbj jbo jbr jbs jjb jjj jjr jjs jnj jnn jno jnr jns job joj jon joo jor jos jrb jrn jro jrr jrs jsb jsj jsn jso jsr jss nbb nbn nbo nbr nbs njn njs nnb nnn nno nns no- nob noj non noo nor nos nrb nrj nrn nro nrr nrs nsb nsn nso nsr nss ob- obb obj obn obo obr obs ojb ojo ojs on- onb onj onn ono onr ons oo- oob oon ooo oor oos or- orb orn oro orr ors os- osb osj osn oso osr oss rbb rbn rbo rbr rbs rjr rnb rnn rno rnr rns rob roj ron roo ror ros rrb rrn rrr rrs rsb rsj rsn rso rsr rss sbb sbj sbn sbo sbr sbs sjb sjj sjr sjs snb snj snn sno snr sns sob soj son soo sor sos sr- srb srj srn sro srr srs ss- ssb ssj ssn sso ssr sss