C1111233133313231133133313231333133313113313113313331322111111311   >>    C111123313331323113313331323133313331311331311331333132211111131   <<    C1111233133313231133133313231333133313113313113313331322111111313   >>      C1111233133313231133133313231333133313113313113313331322111111312   >>