Naive Approach Mining (NAM) algorithm detects the top k co-occurring posts. The vertical approach mining algorithm (VAM) is based on the scanning of the vertical database. The index system (VIAM) vertical mining algorithm is based on an index scanned, vertical database. To reduce the search space, VAM and VIAM are using pruning techniques to increase efficiency. In mining co-occurrence items of long input patterns, VAM and VIAM are especially successful.