-er bbb bbd bbe bbi bbo bbr bbt bdb bdd bde bdi bdo bdr bdt be- beb bed bee bei beo ber bet bi- bib bid bie bii bio bir bit bob bod boe boi boo bor bot brb brd bre bri bro brr brt btb btd bte bti bto btr btt dbb dbd dbe dbi dbo dbr dbt ddb ddd dde ddi ddo ddr ddt de- deb ded dee dei deo der det di- dib did die dii dio dir dit dob dod doe doi doo dor dot drb drd dre dri dro drr drt dtb dtd dte dti dto dtr dtt ebb ebd ebe ebi ebo ebr ebt ed- edb edd ede edi edo edr edt eeb eed eee eeo eer eet eib eid eie eii eio eir eit eo- eob eod eoe eoi eoo eor eot erb erd ere eri ero err ert etb etd ete eti eto etr ett i-d ibb ibd ibe ibi ibo ibr ibt idb idd ide idi ido idr idt ie- ied iee iei ier iet iib iid iie iii iio iir iit io- iob iod ioe ioi ioo ior iot ir- irb ird ire iri iro irr irt itb itd ite iti ito itt o-i ob- obb obd obe obi obo obr obt odb odd ode odi odo odr odt oeb oed oee oei oeo oer oet oib oid oie oii oio oir oit oo- oob ood ooi ooo oor oot or- orb ord ore ori oro orr ort ot- otb otd ote oti oto otr ott rbb rbd rbe rbi rbo rbr rbt rdb rdd rde rdi rdo rdr rdt re- reb red ree rei reo rer ret rib rid rie rii rio rir rit rob rod roe roi roo ror rot rrb rrd rri rrr rrt rtb rtd rte rti rto rtr rtt tbb tbd tbe tbi tbo tbr tbt tdb tdd tde tdi tdo tdr tdt te- teb ted tee tei teo ter tet tib tid tie tii tio tir tit to- tob tod toe toi too tor tot trb trd tre tri tro trr trt ttb ttd tte tti tto ttr ttt