-er b-u bbb bbd bbe bbi bbo bbr bbt bbu bbx bdb bdd bde bdi bdo bdr bdt bdu bdx be- beb bed bee bei beo ber bet beu bex bi- bib bid bie bii bio bir bit biu bix bob bod boe boi boo bor bot bou box brb brd bre bri bro brr brt bru brx btb btd bte bti bto btr btt btu btx bub bud bue bui buo bur but buu bux bxb bxd bxi bxo bxx dbb dbd dbe dbi dbo dbr dbt dbu dbx ddb ddd dde ddi ddo ddr ddt ddu ddx de- deb ded dee dei deo der det deu dex di- dib did die dii dio dir dit diu dix dob dod doe doi doo dor dot dou dox drb drd dre dri dro drr drt dru drx dtb dtd dte dti dto dtr dtt dtu dtx dub dud due dui duo dur dut dux dxd dxi dxo dxr dxt dxx ebb ebd ebe ebi ebo ebr ebt ebu ebx ed- edb edd ede edi edo edr edt edu edx eeb eed eee eeo eer eet eex eib eid eie eii eio eir eit eiu eix eo- eob eod eoe eoi eoo eor eot eou erb erd ere eri ero err ert eru etb etd ete eti eto etr ett etu etx eu- eub eud eue eui eur eut eux ex- exd exe exi exo exr ext exu exx i-d ibb ibd ibe ibi ibo ibr ibt ibu ibx idb idd ide idi ido idr idt idu idx ie- ied iee iei ier iet iex iib iid iie iii iio iir iit iiu iix io- iob iod ioe ioi ioo ior iot iou ir- irb ird ire iri iro irr irt iru irx itb itd ite iti ito itt itu itx iu- iub iud iue iui iur iut ixe ixi o-i ob- obb obd obe obi obo obr obt obu obx odb odd ode odi odo odr odt odu oeb oed oee oei oeo oer oet oex oib oid oie oii oio oir oit oiu oo- oob ood ooi ooo oor oot oox or- orb ord ore ori oro orr ort oru orx ot- otb otd ote oti oto otr ott otu ou- oud oue oui ouo our out ox- oxb oxi oxo oxt oxx rbb rbd rbe rbi rbo rbr rbt rbu rbx rdb rdd rde rdi rdo rdr rdt rdu rdx re- reb red ree rei reo rer ret reu rex rib rid rie rii rio rir rit rix rob rod roe roi roo ror rot rou rox rrb rrd rri rrr rrt rru rtb rtd rte rti rto rtr rtt rtu rtx rub rud rue rui ruo rur rut ruu rux rxr t-x tbb tbd tbe tbi tbo tbr tbt tbu tdb tdd tde tdi tdo tdr tdt tdu tdx te- teb ted tee tei teo ter tet teu tex tib tid tie tii tio tir tit tiu tix to- tob tod toe toi too tor tot tou tox trb trd tre tri tro trr trt tru trx ttb ttd tte tti tto ttr ttt ttu ttx tub tud tue tui tuo tur tut tuu tux txe txi txt txu ubb ube ubi ubo ubr ubt ubu ubx udb udd ude udi udo udr udt udu udx ueb ued uee uei uer uet uib uid uie uii uio uir uit uiu uob uod uoe uoo uor uot uox ur- urb urd ure uri uro urr urt uru urx utb utd ute uti uto utr utt utu utx uue uur uut uuu uxb uxo uxr uxt uxu xbe xbr xbx xdb xde xdi xdr xdt xed xee xer xet xeu xex xie xii xio xit xiu xix xod xoi xoo xor xot xox xrd xrt xrx xti xtr xtx xue xui xxi xxo xxx