Unit 1: About
Unit 2: Above
Unit 3: Across
Unit 4: After
Unit 5: Against
Unit 6: Ahead Of*
Unit 7: Along
Unit 8: Among
Unit 9: Around
Unit 10: As
Unit 11: At
Unit 12: Back To*/Back From*
Unit 13: Before
Unit 14: Behind
Unit 15: Below
Unit 16: Beneath
Unit 17: Beside
Unit 18: Besides
Unit 19: Between
Unit 20: Beyond

Unit 21: But
Unit 22: By
Unit 23: Close To*
Unit 24: Despite/In Spite Of*
Unit 25: Down
Unit 26: During
Unit 27: Except
Unit 28: Far From*
Unit 29: For
Unit 30: From
Unit 31: In
Unit 32: In Back Of*
Unit 33: In Front Of*
Unit 34: Inside
Unit 35: Instead Of*
Unit 36: Into
Unit 37: Like
Unit 38: Near
Unit 39: Next To*
Unit 40: Of

Unit 41: Off
Unit 42: On
Unit 43: Onto
Unit 44: On Top Of*
Unit 45: Opposite
Unit 46: Out
Unit 47: Outside
Unit 48: Over
Unit 49: Past
Unit 50: Through
Unit 51: Throughout
Unit 52: To
Unit 53: Toward
Unit 54: Towards
Unit 55: Under
Unit 56: Underneath
Unit 57: Until
Unit 58: Up
Unit 59: With
Unit 60: Within
Unit 61: Without

Unit 1: Time
Unit 2: Location
Unit 3: Direction
Unit 4: Number
Unit 5: Weather
Unit 6: Source of Information
Unit 7: Affiliation
Unit 8: Description
Unit 9: Wearing
Unit 10: Topic
Unit 11: Recipient
Unit 12: State
Unit 13: Separation
Unit 14: Attitude
Unit 15: Behavior