C11122123231323131323131323132322331313232313231333132313133313132211   >>    C1112212323132313132313132313232233131323231323133313231313331313221   <<    C11122123231323131323131323132322331313232313231333132313133313132213   >>      C11122123231323131323131323132322331313232313231333132313133313132212   >>