C1111233131211111211113313331323133313331331122133313231333133322132321   >>    C111123313121111121111331333132313331333133112213331323133313332213232   <<    C1111233131211111211113313331323133313331331122133313231333133322132323   >>      C1111233131211111211113313331323133313331331122133313231333133322132322   >>