搭便

搭便	dā biàn	at one's convenience / in passing
搭	dā	to put up / to build (scaffolding) / to hang (clothes on a pole) / to connect / to join / to arrange in pairs / to match / to add / to throw in (resources) / to take (boat, train) / variant of 褡
便	biàn	plain / informal / suitable / convenient / opportune / to urinate or defecate / equivalent to 就: then / in that case / even if / soon afterwards
便	pián	used in 便宜 / used in 便便 / used in 便嬛