B3311331313231311331322331333132333133313223331211331333133313221211111232221   >>    B331133131323131133132233133313233313331322333121133133313331322121111123222   <<    B3311331313231311331322331333132333133313223331211331333133313221211111232223   >>      B3311331313231311331322331333132333133313223331211331333133313221211111232222   >>