B3313221211233132322331321123233313231333132233133313331333131211211312131   >>    B331322121123313232233132112323331323133313223313331333133313121121131213   <<    B3313221211233132322331321123233313231333132233133313331333131211211312133   >>      B3313221211233132322331321123233313231333132233133313331333131211211312132   >>