The initial idioms of the letter D

down on luck	down on one's luck
right up one's alley	down pat
jump down someone's throat	down South
down the	down the drain
down the hatch	Down the hatch!
down the line	down the little red lane
down the pan	down the pike
down the road	down the road, not across the street
down the street	down the toilet
down the track	down the tube
down the tube(s)	down the tubes
down time	down to a fine art
down to a gnat 's eyebrow	down to bedrock
down to brass tacks	down to earth
down to fuck	be down to (something)