oh, 43 bytes

Result

INVALID

Duration

918ms

Code [DL]

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

stdin

739 799
619 757
244 545
896 692
954 554
577 639
223 328
953 855
467 261
622 449
849 199
623 331
748 839
524 571
885 854
997 912
299 997
782 887
211 169
674 747
799 557
493 166
453 523
462 199
344 649
188 346
192 238
233 372
134 446
696 339
944 441
639 443

stdout

739 799
619 757
244 545
896 692
954 554
577 639
223 328
953 855
467 261
622 449
849 199
623 331
748 839
524 571
885 854
997 912
299 997
782 887
211 169
674 747
799 557
493 166
453 523
462 199
344 649
188 346
192 238
233 372
134 446
696 339
944 441
639 443

stderr

strace

11    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7fff706a4b50 /* 7 vars */) = 0
12    execve("/bin/cat", ["cat", "-"], 0x55ebc1d11048 /* 7 vars */) = 0
14    execve("/usr/bin/go", ["/usr/bin/go", "env", "GOPATH"], 0x55ebc1d11078 /* 7 vars */ <unfinished ...>
12    +++ exited with 0 +++
14    <... execve resumed>)             = 0
11    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
17    +++ exited with 0 +++
16    +++ exited with 0 +++
19    +++ exited with 0 +++
18    +++ exited with 0 +++
15    +++ exited with 0 +++
14    +++ exited with 0 +++
13    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
13    execve("/root/go/bin/oh", ["/root/go/bin/oh", "/volume/CODE"], 0x55ebc1d11068 /* 7 vars */) = 0
26    execve("/bin/sed", ["sed", "-e", "s/.((.)2 .|.. (.))../23/"], 0xc000090e60 /* 8 vars */) = 0
26    +++ exited with 0 +++
13    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
21    ????( <unfinished ...>
24    +++ exited with 0 +++
23    +++ exited with 0 +++
20    +++ exited with 0 +++
21    +++ exited with 0 +++
25    +++ exited with 0 +++
22    +++ exited with 0 +++
13    +++ exited with 0 +++
11    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=0, si_utime=2, si_stime=5} ---
11    +++ exited with 0 +++