bbb bbd bbi bbl bbr bbt bdb bdd bdi bdl bdr bdt bi- bib bid bii bil bir bit blb bld bli bll blr blt brb brd bri brl brr brt btb btd bti btl btr btt dbb dbd dbi dbl dbr dbt ddb ddd ddi ddl ddr ddt di- dib did dii dil dir dit dl- dlb dld dli dll dlr dlt drb drd dri drl drr drt dtb dtd dti dtl dtr dtt i-d ibb ibd ibi ibl ibr ibt idb idd idi idl idr idt iib iid iii iil iir iit il- ilb ild ili ill ilr ilt ir- irb ird iri irl irr irt itb itd iti itl itt lbb lbd lbi lbl lbr lbt ldb ldd ldi ldl ldr ldt lib lid lii lil lir lit llb lld lli lll llr llt lrb lrd lri lrr lrt ltb ltd lti ltl ltr ltt rbb rbd rbi rbl rbr rbt rdb rdd rdi rdl rdr rdt rib rid rii ril rir rit rld rli rll rlr rlt rrb rrd rri rrl rrr rrt rtb rtd rti rtl rtr rtt tbb tbd tbi tbl tbr tbt tdb tdd tdi tdl tdr tdt tib tid tii til tir tit tld tli tll tlr tlt trb trd tri trl trr trt ttb ttd tti ttl ttr ttt