C11111211113313112113313331333132313331322121111132313211232322331   >>    C1111121111331311211331333133313231333132212111113231321123232233   <<    C11111211113313112113313331333132313331322121111132313211232322333   >>      C11111211113313112113313331333132313331322121111132313211232322332   >>