B331133131323131133132233133313231333132233132313331333132313232212211321   >>    B33113313132313113313223313331323133313223313231333133313231323221221132   <<    B331133131323131133132233133313231333132233132313331333132313232212211323   >>      B331133131323131133132233133313231333132233132313331333132313232212211322   >>