segmentation: book blockade
rank.candidate: bo ok blockade book blo c kade book bloc ka de book block ad e boo k blockade book b locka de book b lockade b ook blockade book b loc kade book blockade book block ade book bloc kade book b lock a de book blo cka de b oo k blockade book bloc kad e book blocka de book block a de boo kb lockade bookb lockade