dddd ddot ddpo ddps ddss ddts dfds dfdt dfrf dfri dftr dfts didi dido dids dif- diff difs diii diis diop dior dios diot dipo dipp dips dipt dird dirr dirs dirt dis- disd disi diso disp diss dist diti dito dits ditt dod- dodd dodi dodo dods doff doid dois doit dood doof doop door doos doot dopo dopp dopr dops dopt dord dorf dori doro dorp dorr dors dort dosi doso doss dost dotd doti doto dots dott dpdt dpos dpsd dpst dpts drif drip drit drod drof drop drot drrs drsp dsdp dsdr dsif dsip dsos dspf dsps dspt dsri dsrp dsrr dssi dssp dsst dsto dsts dtdp dtor dtot dtss dttp fdos fdot fdst fdti ffff ffii ffps ffrr ffss fftf fidf fido fids fiff fifi fifo fift fiii fior fios fipp fips firs fisd fisi fiss fist fiti fits fitt fofo foid fois food foof foos foot fopp fops for- ford fori foro forr fors fort fosi foso foss fost foti foto fotp fots fott fpdt fprf frid frio frip fris frit frop fros frot frpd frps frso frst fsfi fsfo fspf fssf fssp ftdi ftii ftop ftos ftps ftrs ftsr iddo idfp idid idio idir idis idos idps idrf idro idsf idso idss idtp idts ifid ifis ifit ifor ifpo ifps ifrf ifri ifso ifsp ifto iiii iiio iiis iiit iioi iioo iiop iios iipf iirs iisd iisi iisp iisr iist iitr iitt iod- iodd iodo ioii ioio ioit ioof iooi iooo ioos iops iori iors ioso iotf ioto ipdi ipid ipod ipop ipos ippf ippo ippr ipri ipsi ipso ipsp ipss ipto ipts irdo irdp irds iri- irid irio irip iris irod irop irps irri irrs irsf irsp irtf irti irtp irts isds isfp isis isit iso- isof isop isor isos ispf ispr isps isri isrp issf issi isso issp issr isss istd isti isto istp istr ists itdo itif itis itof itoi itoo itor itos itrf itri itrs itsf itsi itso itsp ittf itto oddd oddi odds odio odir odis odoo odop odor odos odot odrp odso odts ofdr off- offo offr offs ofid ofit ofor ofst oftp oido oids oiii oios oirt oisd oist oiti oodi ooff oofs ooid oooo ooos oops oord oort oosi oost ootp oots opds opii opio opis opit opo- opor opos oppi oppo opps opsi opti opto opts ordo ords orff orfi orfs ori- orid orif orio oris orit oro- orof oror oros orot orpi orps orri orro orrs orsi orso orto orts osdi osii osip osis osoi osoo osor osos osrd osro ossd ossi osso osti ostr osts otfp otif otis otit oto- otof otoo otor otos otpp otro otrs otso otti otto otts pdfs pdos pdpr pdrs pdsd pdss pfff pffr pfft pfis pfit pfps pido pids piff pifs piip piot pipi pipo pipp pips piri piro pirr pirs pisd pisi piso piss pist pitf piti pito pitr pits pitt pod- podd podi podo pods poff pofi poid poio pois pood poof poop poor poos poot pop- popi popo popp pops popt pori poro porr pors port posi poso poss post potd potf poti poto pots pott ppds ppid ppif ppod ppos pppd pppo pppp ppps pprf ppsf ppss ppts pptt prfs pri- prid prif prii pris pro- prod prof proo prop pros prot prpd prps prrd prri prrs prsd prsi prso prss prti prtp prtr psdi psdp psdr psds psfs psid psip psis psoi psos pspi pspp pspr psps psrd psrp psso psst psts ptop ptpd ptrd ptrf ptsd rdio rdos rdso rfdi rfds rfid ridd ridi rido rids riff rifs rift riif riis rios riot ripd ripi ripp ripr rips ript riri rirs risd risi riso risp riss rist riti rito rits ritt rodd rodi rodo rods roff rofo roid roif roio roir rois roit rood roof rooi roop roor roos root ropo rops rori roro rort rosi roso rosp ross rost roti roto rotr rots rott rpdp rpii rpof rpos rpps rptd rpts rrif rrrr rrsp rsdd rsds rsid rsis rsos rspo rsps rstp rsts rtdt rtps rtss rttp rtts s-ii s-os sdds sdif sdio sdot sdpr sdps sdrs sdsf sdss sfio sfor sfos sfpd sfro sfss sftp sfts sidd sidi sido sidr sids siff sifo sifr sift siit siod siop sior sios siot sipi sipo sipp sips sipt sirf siri siro sirp sirr sirs sirt sisd sisi siss sist sit- sitd siti sito sits sitt sodd sodo sods sofi sofo soft soif soir sois soit sood soof soop soor soos soot sopd sopi sopo sopp sops sord sori soro sorr sors sort sosi soso soss sost soto sotp sots spdf spdp spdr spdt spfs spio spip spir spis spit spod spoo spop spor spos spot sppd sppf spps sprd spri spro sprs spsd spso spsp spss spst spto sptr spts srfi sris sros srps srpt srsd srsp srtp srtr ssdd ssdf ssdp ssfp ssid ssis ssit ssop ssot sspf sspo ssps sspt ssri ssrs sssf sssi ssss sstd sstp ssts stds stid stif stio stip stir stis stit stod stof stoo stop stor stos stot stpd stpf stpp stps strd stri stro strs stsf stsi stss sttd sttr tdff tdis tdor tdri tdss tfot tfpt tfrs tfsd tfsi tfss tftp tidd tids tiff tifo tift tiit tiop tios tip- tipi tipo tipp tips tipt tird tiri tiro tirr tirs tisi tiso tiss tist titi tito titp tits titt todd todi todo tods todt toff tofi tofo toft toid tois toit tood toof toor toos toot top- topd topf topi topo topp tops topt tord torf tori toro torp torr tors tort tosi toso toss tost totd toti toto totr tots tott tpdf tpir tppd tppp tppr tprs tptp tptr trfd trfr tri- trif trio trip tris trit trod troi troo trop tros trot trpp trps trsd trsi trst trtr tsid tsis tsoi tsop tsos tspo tsps tspt tssf tssi tssr tsst tsts ttff ttop ttss tttt