2 of 5 Added explanation

Perl 5, 33 bytes

conemon=~s/./say$&x(8+2*++$i)/reg

Try it online!

Explanation

conemon=~s/./                /reg  # Replace each letter in string "conemon"
                                   # only for the side effect of
             say                   # printing with newline
                $&                 # the full match (letter)
                  x                # repeated
                   (8+2*++$i)      # 10,12,... times