Eight persons are sitting at different places such that D is 6m north of A,…

Eight persons are sitting at different places such that D is 6m north of A, who is 8m west of C. E is 12m east of B, who is 6m south of G. H is 4m south of C. F is 10m north of E. F is exactly between A and C. What is the shortest distance between G and H?