ACCRUING + CRAWLING = NAUTICAL ~~ Words Used : ACCRUING, CRAWLING and NAUTICAL.
CIRCLING + CRAWLING = WINDLASS ~~ Words Used : CIRCLING, CRAWLING and WINDLASS.
The rules for cryptarithm puzzles are simple. Each letter represents one of the digits 0 to 9. Different letters represent different digits. The first digit in a number can't be 0. Your job is to find out what digit each letter represents. This page has links to puzzles containing "CRAWLING"