C11112331312111112111133133313231333132313331333223313232233313321   >>    C1111233131211111211113313331323133313231333133322331323223331332   <<    C11112331312111112111133133313231333132313331333223313232233313323   >>      C11112331312111112111133133313231333132313331333223313232233313322   >>