stuck, 24 bytes

Result

WA

Duration

502ms

Code [DL]

s' ',Q~gs' ',Q~0Gz"x:x"m

stdin

23 67 40
07 66 68
30 06 57
95 65 94

stdout

(23, 67, 40)[(7, 23), (66, 67), (68, 40)]

stderr

strace