brinkmanship
rapids, current, torrent, shallows, shoal
ライ / せ
door, counter for houses, door radical (no. 63)
コ / と
occasion, side, edge, verge, dangerous, adventurous, indecent, time, when
サイ / きわ
politics, government
セイ / まつりごと
scheme, plan, policy, step, means
サク / —