C1111233133313231133133313331333132313331323113121111331333132322122221   >>    C111123313331323113313331333133313231333132311312111133133313232212222   <<    C1111233133313231133133313331333132313331323113121111331333132322122223   >>      C1111233133313231133133313331333132313331323113121111331333132322122222   >>