1|STATE_NZ_CTXT_R2|STATE_H_R_R1|STATE_H_R_SIGN_R1|STATE_D_UR_R2;

						}
						else
						{
							csj|=STATE_SIG_R1|STATE_VISITED_R1|STATE_NZ_CTXT_R2|STATE_V_U_R2;
							if (!causal)
							{
								pState[j-sscanw]|=STATE_NZ_CTXT_R2|STATE_V_D_R2;

							}
							pState[j+1]|=STATE_NZ_CTXT_R1|STATE_NZ_CTXT_R2|STATE_H_L_R1|STATE_D_UL_R2;
							pState[j-1]|=STATE_NZ_CTXT_R1|STATE_NZ_CTXT_R2|STATE_H_R_R1|STATE_D_UR_R2;

						}
					

					}
					else
					{
						csj|=STATE_VISITED_R1;

					}
					
				}
				if (sheight<2)
				{
					pState[j]=csj;
					continue;
				}
				


				//scanw the second row;
				if ((csj&(STATE_SIG_R2|ST