C11112331312111112111133133313331333131333132312111113331323211232322122211   >>    C1111233131211111211113313331333133313133313231211111333132321123232212221   <<    C11112331312111112111133133313331333131333132312111113331323211232322122213   >>      C11112331312111112111133133313331333131333132312111113331323211232322122212   >>