C11112331312111112111133133313331333131333132313211232313231323223321   >>    C1111233131211111211113313331333133313133313231321123231323132322332   <<    C11112331312111112111133133313331333131333132313211232313231323223323   >>      C11112331312111112111133133313331333131333132313211232313231323223322   >>