C1111233131211111211113313231333133313331323331333133313331111232321   >>    C111123313121111121111331323133313331333132333133313331333111123232   <<    C1111233131211111211113313231333133313331323331333133313331111232323   >>      C1111233131211111211113313231333133313331323331333133313331111232322   >>