C1111233133313231133133313231333133313113313113313331331121111132222121   >>    C111123313331323113313331323133313331311331311331333133112111113222212   <<    C1111233133313231133133313231333133313113313113313331331121111132222123   >>      C1111233133313231133133313231333133313113313113313331331121111132222122   >>