B3311331313231311331322331333132313331322331323133313331323312111112212131   >>    B331133131323131133132233133313231333132233132313331333132331211111221213   <<    B3311331313231311331322331333132313331322331323133313331323312111112212133   >>      B3311331313231311331322331333132313331322331323133313331323312111112212132   >>