C31111132133313133313231333131112111113233313232232132313221311   >>    C3111113213331313331323133313111211111323331323223213231322131   <<    C31111132133313133313231333131112111113233313232232132313221313   >>      C31111132133313133313231333131112111113233313232232132313221312   >>