四つん這い[yottsunbai] (crawl) on all fours
出這入り[dehairi] in and out
這入り込む[irikomu] to go into
這入る[hairu] to enter
這い松[haimatsu] creeping pine

這い這い[haihai] creeping
這う[hau] to creep
腹這い[harabai] lying on one's belly
夜這い[yobai] creeping at night into a woman's bedroom
這い回る[haimawaru] to creep about