C1111233133313231133133313331333133313231312111133131211111232323231   >>    C111123313331323113313331333133313331323131211113313121111123232323   <<    C1111233133313231133133313331333133313231312111133131211111232323233   >>      C1111233133313231133133313331333133313231312111133131211111232323232   >>