I remember back in the days how I used to play 2p mode solo with my left and right hands. It was fun

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How I figured out the order on the learning level? By playing it several times. I knocked the pear I refer to #4 to the right side, then I kicked the pears from above to get down and I see that the two pears must die before that one. On my next play I knock the same pear #4 to the left and I see that the pear that is already there must die before it as well. With other plays I figured out the order of the other pears.
FYI