C1212121231123232233131323223313233313233313223313232332313231111231   >>    C121212123112323223313132322331323331323331322331323233231323111123   <<    C1212121231123232233131323223313233313233313223313232332313231111233   >>      C1212121231123232233131323223313233313233313223313232332313231111232   >>