c-cd cccc cccf ccci cccs ccdc ccdf ccdi ccds ccfc ccfd ccff ccfi ccic ccid ccii ccis ccoc ccod ccsd ccsf ccsi ccss cdcs cdfs cdic cdii cdio cdis cdos cdss cfcf cfco cfcs cfds cfos cfsi cicc cici cico cics cidc cidi cids ciff cifs ciid ciii ciis cios cis- cisc cisd ciss coco codd codi cods cofc coff cofi cofs coif cois cood coof coos cosc cosi coso coss cscc cscd cscf csci csco cscs csfc csid csio csis csos cssd dccc dcci dccs dcds dcfc dcfs dcii dcio dcis dcos dcsc dcss dddd ddoc ddss dfcc dfco dfcs dfds dici dico didi dido dids dif- diff difs diii diis dioc dios dis- disc disd disi diso diss doci doco docs dod- dodd dodi dodo dods doff doid dois dood doof doos dosi doso doss dscc dscs dsfc dsif dsos dssc dssi fccf fcds fcic fcii fcsc fdic fdoc fdos ffcc ffff ffii ffss ficc fico fics fidc fidf fido fids fifc fiff fifi fifo fiii fios fisc fisd fisi fiss foci foco focs fofo foid fois food foof foos fosi foso foss fscc fsfi fsfo fssc fssf iccc iccf icci icco iccs icdc icdd icis icoc icod icos icsc icsd icsi icss iddo idfc idic idid idio idis idoc idos idsc idsf idso idss ifcd ifco ific ifid ifis ifsc ifso iicd iiii iiio iiis iioi iioo iios iisc iisd iisi ioci iod- iodd iodo iofc ioii ioio ioof iooi iooo ioos ioso iscc iscd isci isco iscs isdc isds isfc isic isis iso- isoc isof isos issc issf issi isso isss occc occi ocds ocis ocos odci oddd oddi odds odic odio odis odoo odos odso off- offc offo offs ofid oici oido oids oiii oios oisc oisd oodi ooff oofs ooid oooo ooos oosi oscc osci osco osdi osii osis osoi osoo osos ossd ossi osso s-ic s-ii s-os sccc sccs scdc scdf scds scfc scfi sci- scic scid scif scio scis scoo scsc scsd scsi scso sdcc sdco sddc sdds sdfc sdic sdif sdio sdsc sdsf sdss sfcc sfco sfcs sfdc sffc sfio sfos sfss sicc sici sico sics sidd sidi sido sids siff sifo siod sios sisc sisd sisi siss soci soco socs sodd sodo sods sofi sofo soic soif sois sood soof soos sosi soso soss sscc ssci sscs ssdc ssdd ssdf ssfc ssid ssis ssoc sssc sssf sssi ssss