bbb bbd bbi bbo bbr bbt bdb bdd bdi bdo bdr bdt bdz bi- bib bid bii bio bir bit biz bob bod boi boo bor bot boz brb brd bri bro brr brt brz btb btd bti bto btr btt btz bzd bzo bzr bzz dbb dbd dbi dbo dbr dbt dbz ddb ddd ddi ddo ddr ddt ddz di- dib did dii dio dir dit diz dob dod doi doo dor dot doz drb drd dri dro drr drt drz dtb dtd dti dto dtr dtt dtz dzb dzd dzi dzo dzr i-d ibb ibd ibi ibo ibr ibt ibz idb idd idi ido idr idt iib iid iii iio iir iit io- iob iod ioi ioo ior iot ir- irb ird iri iro irr irt itb itd iti ito itt itz izi izo izz o-i ob- obb obd obi obo obr obt odb odd odi odo odr odt oib oid oii oio oir oit oiz oo- oob ood ooi ooo oor oot or- orb ord ori oro orr ort orz ot- otb otd oti oto otr ott otz ozo ozt ozz rbb rbd rbi rbo rbr rbt rdb rdd rdi rdo rdr rdt rib rid rii rio rir rit riz rob rod roi roo ror rot roz rrb rrd rri rrr rrt rtb rtd rti rto rtr rtt rtz rzb rzo tbb tbd tbi tbo tbr tbt tbz tdb tdd tdi tdo tdr tdt tib tid tii tio tir tit tiz to- tob tod toi too tor tot toz trb trd tri tro trr trt trz ttb ttd tti tto ttr ttt tzd zbb zbr zbt zdt zib zid zio zir zit ziz zo- zob zod zoi zoo zor zot zro ztr zzr zzt zzz