colossus 158 giant cryptic

I NEED HELP WITH
1A ITS A BIG WIN WHEN CAPTAIN SPARROW PUTS TOP BACK ON
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1D GIVE REASONS FOR ALIGNED MARGINS
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11A IS ON THE REBOUND FOR EXAMPLE WITH ENEMY COMMENCING PROLONGED ASSAULT
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15A STARTING OF IN IT I HAD GIANT PROBLEMS
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2D BELIEVE KING AND QUEENS FOR EXAMPLE USE AMERICAN EXPRESS OR VISA

I HAVE PUT MASTER CARDS IS THIS RIGHT
THANKS MAIZIE