-ol bbb bbl bbo bbs bjj bjs blb blj bll blo bls bob boj bol boo bos bsb bsj bsl bso bss jbj jbl jbo jbs jjb jjj jjl jjs jlb jll jlo jls job joj jol joo jos jsb jsj jsl jso jss lbb lbj lbl lbo lbs ljj ljs llb llj lll llo lls lob loj lol loo los lsb lsj lsl lso lss ob- obb obj obl obo obs ojb ojo ojs olb oll olo ols oo- oob ool ooo oos os- osb osj osl oso oss sbb sbj sbl sbo sbs sjb sjj sjs slb slj sll slo sls sob soj sol soo sos ss- ssb ssj ssl sso sss