a:4:{i:0;a:3:{i:0;s:56:"My friend asked me if I had prepared well for the match.";i:1;d:0;i:2;i:1;}i:1;a:3:{i:0;s:58:"My friend asked me if you had prepared well for the match.";i:1;d:0;i:2;i:0;}i:2;a:3:{i:0;s:57:"My friend asked me if I have prepared well for the match.";i:1;d:0;i:2;i:0;}i:3;a:3:{i:0;s:52:"My friend asked me if I prepared well for the match.";i:1;d:0;i:2;i:0;}}