C1111233131211111211113313331333133313331122212111111211331333132322123131   >>    C111123313121111121111331333133313331333112221211111121133133313232212313   <<    C1111233131211111211113313331333133313331122212111111211331333132322123133   >>      C1111233131211111211113313331333133313331122212111111211331333132322123132   >>