B33113313132313113313223313331322331311331322331333132313331323211232222121   >>    B3311331313231311331322331333132233131133132233133313231333132321123222212   <<    B33113313132313113313223313331322331311331322331333132313331323211232222123   >>      B33113313132313113313223313331322331311331322331333132313331323211232222122   >>