C11212213133313132313231322132313231333131133132332111112323231   >>    C1121221313331313231323132213231323133313113313233211111232323   <<    C11212213133313132313231322132313231333131133132332111112323233   >>      C11212213133313132313231322132313231333131133132332111112323232   >>