-up b-p b-u bbb bbd bbf bbi bbp bbr bbs bbu bdb bdd bdf bdi bdp bdr bds bdu bfb bfd bff bfi bfp bfr bfs bfu bi- bib bid bif bii bip bir bis biu bpb bpd bpf bpi bpp bpr bps bpu brb brd brf bri brp brr brs bru bsb bsd bsf bsi bsp bsr bss bsu bub bud buf bui bup bur bus buu dbb dbd dbf dbi dbp dbr dbs dbu ddb ddd ddf ddi ddp ddr dds ddu dfb dfd dff dfi dfp dfr dfs dfu di- dib did dif dii dip dir dis diu dpb dpd dpf dpi dpp dpr dps dpu drb drd dri drp drr drs dru dsb dsd dsf dsi dsp dsr dss dsu dub dud duf dui dup dur dus fbb fbd fbf fbi fbp fbr fbs fbu fdb fdd fdf fdi fdp fdr fds fdu ffd fff ffi ffp ffr ffs ffu fib fid fif fii fip fir fis fiu fpb fpd fpi fpp fpr fps fpu frb frd frf fri frp frr frs fru fsb fsd fsf fsi fsp fsr fss fsu fub fud fuf fui fup fur fus fuu i-d i-f ibb ibd ibf ibi ibp ibr ibs ibu idb idd idf idi idp idr ids idu ifb ifd iff ifi ifp ifr ifs ifu iib iid iif iii iip iir iis iiu ipb ipd ipf ipi ipp ipr ips ipu ir- irb ird irf iri irp irr irs iru is- isb isd isf isi isp isr iss isu iu- iub iud iui iup iur ius p-p pbb pbd pbf pbi pbp pbr pbs pbu pdb pdd pdf pdi pdp pdr pds pdu pfb pfd pff pfi pfp pfr pfs pfu pib pid pif pii pip pir pis piu ppb ppd ppf ppi ppp ppr pps ppu prb prd prf pri prp prr prs pru ps- psb psd psf psi psp psr pss psu pub pud puf pui pup pur pus puu rbb rbd rbf rbi rbp rbr rbs rbu rdb rdd rdf rdi rdp rdr rds rdu rfb rfd rff rfi rfp rfr rfs rfu rib rid rif rii rip rir ris rpb rpd rpf rpi rpp rpr rps rpu rrb rrd rrf rri rrp rrr rrs rru rsb rsd rsf rsi rsp rsr rss rsu rub rud ruf rui rup rur rus ruu sbb sbd sbf sbi sbp sbr sbs sbu sdb sdd sdf sdi sdp sdr sds sdu sfb sfd sff sfi sfp sfr sfs sfu sib sid sif sii sip sir sis siu spb spd spf spi spp spr sps spu sr- srb srd srf sri srp srr srs ss- ssb ssd ssf ssi ssp ssr sss ssu sub sud suf sui sup sur sus suu ubb ubf ubi ubp ubr ubs ubu udb udd udf udi udp udr uds udu ufd uff ufi ufp ufr ufs ufu uib uid uif uii uip uir uis uiu up- upb upd upf upi upp upr ups upu ur- urb urd urf uri urp urr urs uru usb usd usf usi usp usr uss usu uur uus uuu