B33113313132313113313223313331323133313221211331333133313231312111113311223321   >>    B3311331313231311331322331333132313331322121133133313331323131211111331122332   <<    B33113313132313113313223313331323133313221211331333133313231312111113311223323   >>      B33113313132313113313223313331323133313221211331333133313231312111113311223322   >>