sbp sbr sbs sbt sbu sda sdb sdd sdg sdi sdo sdp sdr sds sdt sdu sga sgb sgd sgg sgi sgo sgp sgr sgs sgt sgu sia sib sid sig sii sio sip sir sis sit siu soa sob sod sog soi soo sop sor sos sot sou spa spb spd spg spi spo spp spr sps spt spu sr- sra srb srd srg sri sro srp srr srs srt ss- ssa ssb ssd ssg ssi sso ssp ssr sss sst ssu sta stb std stg sti sto stp str sts stt stu sua sub sud sug sui suo sup sur sus sut suu taa tab tad tag tai tao tap tar tas tat tau tba tbb tbd tbg tbi tbo tbp tbr tbs tbt tbu tda tdb tdd tdg tdi tdo tdp tdr tds tdt tdu tga tgb tgg tgi tgo tgp tgr tgs tgt tgu tia tib tid tig tii tio tip tir tis tit tiu to- toa tob tod tog toi too top tor tos tot tou tpa tpb tpd tpg tpi tpo tpp tpr tps tpt tpu tra trb trd trg tri tro trp trr trs trt tru tsa tsb tsd tsg tsi tso tsp tsr tss tst tsu tta ttb ttd ttg tti tto ttp ttr tts ttt ttu tua tub tud tug tui tuo tup tur tus tut tuu ua- uaa uab uad uag uai uao uap uar uas uat uau uba ubb ubg ubi ubo ubp ubr ubs ubt ubu uda udb udd udg udi udo udp udr uds udt udu uga ugb ugg ugi ugo ugp ugr ugs ugt ugu uia uib uid uig uii uio uip uir uis uit uiu uoa uob uod uog uoo uop uor uos uot up- upa upb upd upg upi upo upp upr ups upt upu ur- ura urb urd urg uri uro urp urr urs urt uru usa usb usd usg usi uso usp usr uss ust usu uta utb utd uti uto utp utr uts utt utu uua uug uur uus uut uuu