dddd ddot ddpo ddps ddss ddts dfds dfdt dfts didi dido dids dif- diff difs diii diis diop dios diot dipo dipp dips dipt dis- disd disi diso disp diss dist diti dito dits ditt dod- dodd dodi dodo dods doff doid dois doit dood doof doop doos doot dopo dopp dops dopt dosi doso doss dost dotd doti doto dots dott dpdt dpos dpsd dpst dpts dsdp dsif dsip dsos dspf dsps dspt dssi dssp dsst dsto dsts dtdp dtot dtss dttp fdos fdot fdst fdti ffff ffii ffps ffss fftf fidf fido fids fiff fifi fifo fift fiii fios fipp fips fisd fisi fiss fist fiti fits fitt fofo foid fois food foof foos foot fopp fops fosi foso foss fost foti foto fotp fots fott fpdt fsfi fsfo fspf fssf fssp ftdi ftii ftop ftos ftps iddo idfp idid idio idis idos idps idsf idso idss idtp idts ifid ifis ifit ifpo ifps ifso ifsp ifto iiii iiio iiis iiit iioi iioo iiop iios iipf iisd iisi iisp iist iitt iod- iodd iodo ioii ioio ioit ioof iooi iooo ioos iops ioso iotf ioto ipdi ipid ipod ipop ipos ippf ippo ipsi ipso ipsp ipss ipto ipts isds isfp isis isit iso- isof isop isos ispf isps issf issi isso issp isss istd isti isto istp ists itdo itif itis itof itoi itoo itos itsf itsi itso itsp ittf itto oddd oddi odds odio odis odoo odop odos odot odso odts off- offo offs ofid ofit ofst oftp oido oids oiii oios oisd oist oiti oodi ooff oofs ooid oooo ooos oops oosi oost ootp oots opds opii opio opis opit opo- opos oppi oppo opps opsi opti opto opts osdi osii osip osis osoi osoo osos ossd ossi osso osti osts otfp otif otis otit oto- otof otoo otos otpp otso otti otto otts pdfs pdos pdsd pdss pfff pfft pfis pfit pfps pido pids piff pifs piip piot pipi pipo pipp pips pisd pisi piso piss pist pitf piti pito pits pitt pod- podd podi podo pods poff pofi poid poio pois pood poof poop poos poot pop- popi popo popp pops popt posi poso poss post potd potf poti poto pots pott ppds ppid ppif ppod ppos pppd pppo pppp ppps ppsf ppss ppts pptt psdi psdp psds psfs psid psip psis psoi psos pspi pspp psps psso psst psts ptop ptpd ptsd s-ii s-os sdds sdif sdio sdot sdps sdsf sdss sfio sfos sfpd sfss sftp sfts sidd sidi sido sids siff sifo sift siit siod siop sios siot sipi sipo sipp sips sipt sisd sisi siss sist sit- sitd siti sito sits sitt sodd sodo sods sofi sofo soft soif sois soit sood soof soop soos soot sopd sopi sopo sopp sops sosi soso soss sost soto sotp sots spdf spdp spdt spfs spio spip spis spit spod spoo spop spos spot sppd sppf spps spsd spso spsp spss spst spto spts ssdd ssdf ssdp ssfp ssid ssis ssit ssop ssot sspf sspo ssps sspt sssf sssi ssss sstd sstp ssts stds stid stif stio stip stis stit stod stof stoo stop stos stot stpd stpf stpp stps stsf stsi stss sttd tdff tdis tdss tfot tfpt tfsd tfsi tfss tftp tidd tids tiff tifo tift tiit tiop tios tip- tipi tipo tipp tips tipt tisi tiso tiss tist titi tito titp tits titt todd todi todo tods todt toff tofi tofo toft toid tois toit tood toof toos toot top- topd topf topi topo topp tops topt tosi toso toss tost totd toti toto tots tott tpdf tppd tppp tptp tsid tsis tsoi tsop tsos tspo tsps tspt tssf tssi tsst tsts ttff ttop ttss tttt