C131121333133313233213331333133313331333133313231333131333131111231   >>    C13112133313331323321333133313331333133313331323133313133313111123   <<    C131121333133313233213331333133313331333133313231333131333131111233   >>      C131121333133313233213331333133313331333133313231333131333131111232   >>