B3311331313231311331322331333132313331322331323133313331313331211111231   >>    B331133131323131133132233133313231333132233132313331333131333121111123   <<    B3311331313231311331322331333132313331322331323133313331313331211111233   >>      B3311331313231311331322331333132313331322331323133313331313331211111232   >>