single thing single thought single thread single threshold single thrust single tickets single ticket single tier single tile single time single title single tone single tool single tooth single topic single top single touch single tourist single tournament single tower single town single trace single track single trader single trade single training single train single transaction single transferable vote single transistor single transit single transmission single transport single travelers single travellers single travel single treatment single tree single trial single trigger single trip single truth single tube single turn single tweet single twist single type single umbrella single undertaking single unified single uniform single union single units single unit single universal single university single update single user interface to a single user single user single use single vaccination single value single vampire single variable single variety single vehicle single vendor single verse single version single vessel single vial single victim single victory single video file single video single view of the customer single view single village single vineyard single virtual single virus single vision single visitor single visit single voice single volume single vote single vowel single wagon single wall single was produced single was released single watch single wavelength single wave single way single weapon single web page single webpage single website single web single weekend single week single weight single wheel single white female single white single whole single will single window single wine single wing single winner single win single wire single wish single witness single woman single women single words to a single word single word single worker single workout single workspace single workstation single work single world single wound single wrap single yarn single year single yellow single zero single zip file single zone single-acting single-action single-agent single-aisle aircraft single-arm study single-arm single-axis single-axle single-bed single-blind single-board computer single-board single-breasted single-button single-byte single-car accident single-cell organism single-celled algae single-celled organisms single-celled single-cell single-chain single-chamber single-channel single-chip single-circuit single-click single-coil pickups single-coil single-colored single-color single-coloured single-colour single-column single-component single-core single-crystal single-cylinder single-day single-deck single-digit single-dose administration single-dose containers single-dose container single-dose pharmacokinetics single-dose study single-dose vial single-dose single-edged blade single-edged single-ended single-engine aircraft single-engine plane single-engined single-engine single-entry single-family homes single-family houses single-family house single-family single-file line single-file single-floor