Male=0 proposes to Female=3 ... success!
Male=1 proposes to Female=3 ... failed, next target will be 1st lady.
Male=1 proposes to Female=2 ... success!
Male=2 proposes to Female=3 ... failed, next target will be 1st lady.
Male=2 proposes to Female=2 ... failed, next target will be 2nd lady.
Male=2 proposes to Female=1 ... success!
Male=3 proposes to Female=3 ... failed, next target will be 1st lady.
Male=3 proposes to Female=2 ... failed, next target will be 2nd lady.
Male=3 proposes to Female=1 ... failed, next target will be 3rd lady.
Male=3 proposes to Female=0 ... success!
==== Stable Marriage ====
Male=0[rank:0] <=> Female=3[rank:0]
Male=1[rank:1] <=> Female=2[rank:1]
Male=2[rank:2] <=> Female=1[rank:2]
Male=3[rank:3] <=> Female=0[rank:3]
Reference: marriaged pairs ==================
(0, 3) (1, 2) : 0---2  1---3
(0, 3) (2, 1) : 0---1  2---3
(0, 3) (3, 0) : 0---0  3---3
(1, 2) (2, 1) : 1---1  2---2
(1, 2) (3, 0) : 1---0  3---2
(2, 1) (3, 0) : 2---0  3---1