B33113313132313113313223313331323133313223313231333133313311212111112213221221   >>    B3311331313231311331322331333132313331322331323133313331331121211111221322122   <<    B33113313132313113313223313331323133313223313231333133313311212111112213221223   >>      B33113313132313113313223313331323133313223313231333133313311212111112213221222   >>