B331133131323131133132233133313231333132233132313331333131323123232223221   >>    B33113313132313113313223313331323133313223313231333133313132312323222322   <<    B331133131323131133132233133313231333132233132313331333131323123232223223   >>      B331133131323131133132233133313231333132233132313331333131323123232223222   >>