B3313221211233132322331321123233313231333132233133313331323122311   >>    B331322121123313232233132112323331323133313223313331333132312231   <<    B3313221211233132322331321123233313231333132233133313331323122313   >>      B3313221211233132322331321123233313231333132233133313331323122312   >>