B3313221211233132322331321123233313231333132233133313331333132213231313311   >>    B331322121123313232233132112323331323133313223313331333133313221323131331   <<    B3313221211233132322331321123233313231333132233133313331333132213231313313   >>      B3313221211233132322331321123233313231333132233133313331333132213231313312   >>