勾连

to be linked together / to be involved with / to collude / interconnection / involvement / collusion

surname Gou

to attract / to arouse / to tick / to strike out / to delineate / to collude / variant of 鉤|钩[gou1], hook

see 勾當|勾当[gou4 dang4]

surname Lian

to link / to join / to connect / continuously / in succession / including / (used with 也[ye3], 都[dou1] etc) even / company (military)