B3313221211233132322331321123233313231333132233133313331323221311211331   >>    B331322121123313232233132112323331323133313223313331333132322131121133   <<    B3313221211233132322331321123233313231333132233133313331323221311211333   >>      B3313221211233132322331321123233313231333132233133313331323221311211332   >>