C1111233131211111211113313231333132333132322331323133313231312321   >>    C111123313121111121111331323133313233313232233132313331323131232   <<    C1111233131211111211113313231333132333132322331323133313231312323   >>      C1111233131211111211113313231333132333132322331323133313231312322   >>