Given the feedback, the solution starts with CR. The repeated pattern from CRANE, CRUSH, and CROWD confirms that the first two letters are C and R, while letters A, N, E, U, S, H, O, W, and D have been eliminated. In addition, CRIMP provided a yellow for P, which shows that P is in the word, but not in the fifth position. Considering these constraints and avoiding eliminated letters, CRYPT (C-R-Y-P-T) fits perfectly because P is correctly placed in the fourth slot and none of the eliminated letters appear.