B33113313132313113313223313331323133313223313231333133313231312121133132211331   >>    B3311331313231311331322331333132313331322331323133313331323131212113313221133   <<    B33113313132313113313223313331323133313223313231333133313231312121133132211333   >>      B33113313132313113313223313331323133313223313231333133313231312121133132211332   >>