B331133131323131133132233133313231323223313233213231333133313231333133313222121   >>    B33113313132313113313223313331323132322331323321323133313331323133313331322212   <<    B331133131323131133132233133313231323223313233213231333133313231333133313222123   >>      B331133131323131133132233133313231323223313233213231333133313231333133313222122   >>