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use strict;
use warnings;
...
}

print join "\n", map {"$_->[0]: " . join ' ', @{$_->[1]}} @UnNum;

41: forc two bodi twice strong on bodi sai bodi mass
41: you expect on think new bodi made two bodi origin
...
48: total forc b twice origin force
39: sai on bodi twice mass three time mass forc six
20: on now see why bodi fall same rate bodi twice