B3313221211233132322331321123233313231333132233133313331333132333131322221   >>    B331322121123313232233132112323331323133313223313331333133313233313132222   <<    B3313221211233132322331321123233313231333132233133313331333132333131322223   >>      B3313221211233132322331321123233313231333132233133313331333132333131322222   >>