# [MATL], <s>12</s> 11 bytes

-1 byte thanks to the master himself:)

    60:B"@fQ6eq


Explanation:

    60:           % create a vector [1,2,3,...,60]
       B          % convert to binary matrix (each row corresponds to one number)
        "         % loop over the columns and execute following commands:
         @f       % "find" all the nonzero entries and list their indices
           Q      % increment everything
            6e    % reshape and pad with a zero at the end
              q   % decrement (reverts the increment and makes a -1 out of the zero
                  % close loop (]) implicitly
                  % display the entries implicitly


[Try it online!][TIO-jv2cowmt]

[MATL]: https://github.com/lmendo/MATL
[TIO-jv2cowmt]: https://tio.run/##y00syfn/38zAyknJIS3QLLXw/38A "MATL – Try It Online"