The given letters O,A,I,E
are from these 'Down' Clues!!
'O'...112d...clue....Schemes(5)answer...Plots
'A'...102d...clue....Gunfire(7)answer...BarrAge
'I'...93d...clue...Pointless damage to property...answer...Vandalism
'E'...clue...Climb...answer...Ascend