B3313221211233132322331321123233313231333132233133313331333131211111333221   >>    B331322121123313232233132112323331323133313223313331333133313121111133322   <<    B3313221211233132322331321123233313231333132233133313331333131211111333223   >>      B3313221211233132322331321123233313231333132233133313331333131211111333222   >>