B33113313132313113313223313331323133313223313231333131133131333132322132112221   >>    B3311331313231311331322331333132313331322331323133313113313133313232213211222   <<    B33113313132313113313223313331323133313223313231333131133131333132322132112223   >>      B33113313132313113313223313331323133313223313231333131133131333132322132112222   >>