B3313221211233132322331321123233313231333132233133313331333132321123221211   >>    B331322121123313232233132112323331323133313223313331333133313232112322121   <<    B3313221211233132322331321123233313231333132233133313331333132321123221213   >>      B3313221211233132322331321123233313231333132233133313331333132321123221212   >>