It should be "walking beside". The words "walking beside" are generally related to "walking".
The characters that contain the bottom of walking are: return, enter, near, border, pass, far, select, pass, connect, escape, transport, encounter, penetrate, this, welcome, send, chase, road, speed, remote, return, inferior, trace, late, retreat, tease, force, move, pass, deliver, dispatch, avoid, di, mai, fit, cover, maze, reach, chase, make, liao, yi, yi, way, wei, overlap, meet, die.