oh, 43 bytes

Result

INVALID

Duration

1203ms

Code [DL]

sed -e "s/.\(\(.\)\2 .\|.. \(.\)\)../\2\3/"

stdin

966 566
316 326
719 997
733 945
115 818
612 923
699 449
477 576
551 151
832 328
643 341
669 242
472 176
571 736
372 773
413 118
183 922
922 335
323 887
314 171
542 233
499 917
489 446
498 982
269 992
877 779
711 142
844 382
942 824
344 443
847 626
186 679

stdout

966 566
316 326
719 997
733 945
115 818
612 923
699 449
477 576
551 151
832 328
643 341
669 242
472 176
571 736
372 773
413 118
183 922
922 335
323 887
314 171
542 233
499 917
489 446
498 982
269 992
877 779
711 142
844 382
942 824
344 443
847 626
186 679

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffd8a1b9650 /* 7 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x556ac40a3048 /* 7 vars */) = 0
13    execve("/usr/bin/go", ["/usr/bin/go", "env", "GOPATH"], 0x556ac40a3078 /* 7 vars */ <unfinished ...>
11    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
13    <... execve resumed>)             = 0
15    +++ exited with 0 +++
16    +++ exited with 0 +++
18    +++ exited with 0 +++
17    +++ exited with 0 +++
14    +++ exited with 0 +++
13    +++ exited with 0 +++
12    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
12    execve("/root/go/bin/oh", ["/root/go/bin/oh", "/volume/CODE"], 0x556ac40a3068 /* 7 vars */) = 0
26    execve("/bin/sed", ["sed", "-e", "s/.((.)2 .|.. (.))../23/"], 0xc000084f00 /* 8 vars */) = 0
26    +++ exited with 0 +++
12    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
19    +++ exited with 0 +++
25    +++ exited with 0 +++
21    +++ exited with 0 +++
20    +++ exited with 0 +++
23    +++ exited with 0 +++
22    +++ exited with 0 +++
24    +++ exited with 0 +++
12    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=2, si_stime=3} ---
10    +++ exited with 0 +++