Hey this was fun! I second what John said, entering only the combinations for left-most item made me play it without ease. It's pretty hard to remember which key corresponds to which shape. I had to use a mnemotic to remember: shape colors are in "red green blue" order, which is same as RGB. :D
Another complaint is that sometimes if two patterns start with same shape, the game doesn't allow me to choose which pattern to enter, so I end up making an unintentional mistake.
Otherwise, pretty polished for a first jam game! Well done!