C1111233133313231133133313331333133313231121333133313331211111111332321   >>    C111123313331323113313331333133313331323112133313331333121111111133232   <<    C1111233133313231133133313331333133313231121333133313331211111111332323   >>      C1111233133313231133133313331333133313231121333133313331211111111332322   >>