B331133131323131133132233133313231333132233132313331323132322133313222121   >>    B33113313132313113313223313331323133313223313231333132313232213331322212   <<    B331133131323131133132233133313231333132233132313331323132322133313222123   >>      B331133131323131133132233133313231333132233132313331323132322133313222122   >>